I'm going to have to say third gen games RSE, are currently my favorite Pokémon games. I have yet to play Black and White and when I do, I'm going to have to learn more about everything from the new gen from features to items, etc., so I can't decide on if it is my favorite until then. The Hoenn region was my favorite to travel, and I remember the old days when I would make goals and train certain Pokémon to high levels never quite reaching LV 100. I had restarted a lot, because that's just how much I enjoyed it, and I would end up completing the game in 4 days. Definitely my favorite Pokémon games from back then till now, and who knows if it will change or not when I experience what B/W has to offer.