The main differences for you as a potential buyer are that you may have more difficulty in potential repairs and/or replacements due to the V1 no longer being manufactured. As mentioned above, the vast majority of parts will be the same...
However I know that there are times during a claim, that the company would normally just do a replacement, as opposed to the costs of repair. So if say your standard V1 controller goes out. If there are no longer any V1 controllers available, you will have to find one through some third party, if you can... as an example.
Also as I mentioned... if you are potentially interested in getting a Smart Controller, then the decision has already been made for you. Also with this compatiblity situation, consider one of the retail outfits that advertise on this board such as
@advexure. If ever you needed after purchase support, they will be better than any Amazon store. (Also just so you know and there is no confusion... the Amazon store
Autel Pilots has
no affiliation with this board.)