Sending mine back, literally no different from my 1st generation except for USB-C and obviously improved battery.
Lesson learnt, don't listen to the hype from sheep and tech YouTubers.
APP1 to APP2 was a fairly big improvement in sound quality and noise cancelling.
APP2 lightning to APP2 USB-C just gives you the new port, and a wireless hardware change that will only be used by the vision pro. Use with your phone or Mac should be almost identical between the 2 versions of APP2.
The easy way to tell the 1s from the 2s, both versions of the APP2 have the lanyard attach point on the side.
I've owned the APP1 and APP2 lightning, Didn't get the APP2 USB-C because I read the reviews and realized wouldn't be a noticeable change.
To the OP:
I think you might be surprised when you get them, the convince far outweighs any loss in sound quality.