Priority pass changed my flight experience so much in a good way. It is a luxurious thing, but it makes it so much better. Before I would have to pick between stress of missing my flight, or not being able to work. With priority pass I just leave 3.5 hours in advance, travel to the airport no stress and then plop down in a lounge and work while eating and drinking something. That is +/- 1.5 to 2.5 hours every flight I can just be productive while having to 'wait'.
In-flight wifi is also on my list, long haul I never travel without anymore. If I am sitting in a metal tube for 10 hours, I might as well take 8 of those hours and be productive while I am flying. The 30 euro for wifi is a no brainer then.
The Air M1 is spot on, it is the exact machine I am also using and traveling with. Every person around me is questioning why I (lead developer) is working on an Air instead of a Pro. But it is more than fast enough and so light that I would never pick the pro.