Which Pokémon game in its prime was you’re favorite?

By in its prime, I mean like the most that a Pokemon games player count was at its most, or like when the DS and 3ds servers were still up and being updated with mystery gifts, or it can even be when you most enjoyed it personally like if you played a Pokemon game with your friends or family at some point. For me, it either had to be when Platinum online servers were still up, or when XY was still new