Having tried both the v2 and stealth in the last few weeks, they are nearly identical. The stealth has a bit more energy in the upper treble which can come across as more detailed, and it has a miss intimate soundstage which I honestly enjoy. If you wanted the v2, just get a stealth.
The difference between the stealth magnets is mostly marketing imo, but it does suck that the old leather box is no longer included. It's just a cheap mass manufacturer cardboard which is a shame. I ended up keeping the leather box when I sold my he1k to try out the stealth haha.
You can even just get something like a d30 pro since dacs above a few dollars only give you more features not greater performance.