Go take a look at the Citizen eco drive range.
They all use a solar powered quartz movement that is pretty much worry free sand one of the most reliable options out there, and come in a wide range of styles within your budget. Pretty much my default recommendation for a simple, no non-serviceable watch on a budget.
Failing that you are looking at options like the Seiko ranges (again, they do a range of solar quartz movements that should fit your budget), and various Casio and Timex models.
The only reason I can see for getting a second watch of a model that you already own would be if you were scared about losing or damaging the one you have and feel you need a spare.
Personally while I can understand the desire to have backups, in this case it is overkill. As a worst case, your watch gets irreparably damaged in a few years time - even if they are not available new, most standard production Seiko's are still going to be available. Even if you have to pay a bit of a premium for a good example it will not be impossible to get.
That also assumes your tastes are still exactly the same and Seiko have completely dispensed with your chosen watch range. Buying a spare locks you in to that model, while waiting allows you the opportunity to revise your opinion and buy something different that may have been released.
So I wouldn't worry about keeping a spare to hand. Spend your money on something more immediately useful and a replacement watch can be figured out in the future if it is ever necessary.
Because every watch is different, there is no standard set of fitted end lugs - you need to get them specific to your watch. Not only would you need the width and radius of the curve of the endlink to match, but also the height, the shape of the back where it sits against the case, the shape of the front to match the lug design, the finishes and more.
Because of this you just don't get aftermarket bracelets with fitted end links for most watches - some brands may have them available as an option, and there are a few third party options available for some very popular watch models like the Seiko SKX, but if the manufacturer doesn't make one, you are out of luck for most brands.
What is available as an option would be a bracelet with a straight end link - this means as long as you get a bracelet with the correct lug width (usually 18/20/22mm) it will fit, but there will be gaps between the bracelet and case.
My first instinct would be 'no' - the standard fare would be something more along the lines of a GShock, chunky diver or similar piece.
But it actually choice down more to how you accessories around it and pull it off - a big diamond encrusted watch well probably looks a bit odd in isolation, but add a matching chain and suddenly it becomes a coordinated style. I would hazard that a dressy watch will do exactly the same - odd in isolation, but a cool statement when planned.
There is also of course the other thing to consider - how much do you care what others think? If you think it looks cool, then go for it.
I don't have any definitive proof one way or the other, but I would be amazed if it was anything other than a voiceover.
He has a superb, natural feel to his commentary that doesn't feel stunted and robotic like reading from a script often can be, bit it is also just too perfect to actually be a continuous take along with the footage - he never flubs a line or misses a cue, hits all of the main points of the process perfectly, and just nails it in a way that is too seamless.
The audio is also just a little too perfect - easy when sat before a mic in a recording setup, much harder to do consistently when moving around and working, switching between machines, and dealing with the foibles of your chosen mic system used live - no noise from the clothes you lav mic is attached to, or variable volume from moving nearer or farther from a desk mic...
If anything it should be slightly better, as the crown at 4 will be tucked slightly more neatly against the case and less likely to stick out into your wrist.
Whether this is an issue of course will depend on exactly how you wear your watch - I wear mine fairly loose and have never had an issue with a crown before (3 or 4 o'clock versions), but if you keep your watch cinched in tight up against your wrist it may be more of an issue.
Given this sub is dedicated to traditional watches, your answers are going to be very heavily biased towards traditional watches - ask the same question in a smartwatch based sub and I don't doubt you will find a similar bias in that direction.
Personally, I wear traditional (primarily mechanical, but some quartz in both analog and digital) watches.
Currently I have no real in interest in smartwatches - they are a gadget I just don't personally see a big appeal in, so haven't tried.
Alongside that, as someone with an interest in watches anyway, I enjoy the watches I currently wear, and don't really want to swap them out for something else.
The one feature I do like the sound of is access to Google maps on my wrist, but the rest I am happier just using a phone for.
Take it to a professional - unfortunately it will cost you, but significantly less than the cost of opening it yourself, unwittingly damaging it more, and then having to pay a professional anyway (and now needing bonus posts replaced).
Fixing watches is absolutely possible for people to learn, but it is a skill that takes a lot of practise and learning - something you want to learn on cheap movements you don't mind damaging, not a Breitling
That watch looks to be a Seiko Presage (one of the cocktail time models) or possibly an Alpinist or similar - I definitely have a similar looking strap in black that I bought for my SARB033.
That type of hidden, fixed buckle would be called a deployant clasp.
They are fashion watches.
As a general rule you are paying for the logo on the dial, not the quality of the watch - buying from a more traditional watch brand will get you a better watch for your money, but it obviously won't have the same appeal to the more fashion conscious.
So if you want a piece of jewellery or fashionable accessory, by all means go for it - they are perfectly functional watches after all, even if not the greatest value for money. If you want to get the most for your money instead, I would shop around.
The traditional rules would be that with formal dress you should be wearing a leather strapped dress watch (or not wearing a watch at all).
But that is following the traditional rules, and assuming you are dressing in a fully formal fashion. In reality there are many different grades of suit and levels of formality for different situations - taking a slightly more casual approach then a nice sports watch on a bracelet (think datejust/oyster perpetual or aqua Terra) would be a reasonable choice.
But it is also worth noting that the world has moved on since those rules were formulated - whereas once the expectation was that every detail of your dress would be immaculate, often you well find a slightly more casual approach nowadays, and the true formal wear is really reserved for special occasions. I don't doubt these events do exist, but I can only say that I have never personally been invited to one...
The clue is generally to look at how those around you are presented. If every one of them is perfectly dressed and there are traditional dress watches all round, then you may be the odd man out. But not realistically, if you can see a scattering of smart watches and fitness trackers hidden under cuffs, then a nice sports watch on a bracelet is going to be absolutely fine (if not actually smarter than most).
As much or as little as you are comfortable with.
As you noted, to some spending £200 on a Seiko is an expensive watch compared to the £20 Casio they wore before, to others that same £200 watch doesn't even rank as good enough to be a beater watch.
Neither answer is wrong, they just suit different people, different lifestyles and different budgets.
So spend as much or as little as you are willing and able to afford. I know I will never be able to justify Rolex money, but that hasn't stopped me finding my ideal watches that do fit my budget and I enjoy wearing just the same.