>>31352371BW2, no contest
Insteresting aesthetic going on with a jungle part, caves, waterfalls and the ruins of N's castle, which is also a nice continuity callback to BW. Lots of storng trainers, and many different wild encounters that is not just Graveler and Golbat.
Followed by BW/XY route. The BW is not that varied, but the anthill thing is really neat, and the XY is similar to the BW2 one, altough it kinda feels like the discount BW2 VR
Gen 4, followed by Gen 3, I edge Gen 4 because I like you you can unlock the foggy part for the Shaymin event and I like the puzzles better, followed by Gen 1
Gen 7 and 2 are equally shitty