>>11923518
G/S/C and I'm not apologetic about it.
Pros:
The art style is great better then RBY in my humble opinion.
250 pokemon (including my boys Cyndaquil, Gligar and Steelix)
Actually have a chance at catching them all,
Night and Day cycle meaning when it's dark outside it's dark in the pokemon world too,
Johto is a legitimately awesome region, well thought out and leans hard into Shinto and Buddhist themes,
16 Gyms,
The whole (well mostly) of Kanto to explore as "post game"
And that fight with Red is aces.

Cons:
Kinda the start of the meme-legendaries (2 box legendaries, 3 dogs, 3 birds, potential for mew and mew-two, and potential for Celebi),
16 Gyms, at least 12 of them are easy mode (L40 and below),
Elite Four are okay but Lance is awful,
Not really seeing all of Kanto due to size limits, still better for being there than absent.