Played 1-6 and still one of my all time favorite franchises. Can't wait for gen 7
Favorties is Gen 2,3,and 5.
1 for nostalgia reasons. 2, 3, and 6 is too tough for me to decide though I would prob say story for B/W and the over all world and pokemon 2 and 3. 4 is the only gen i didnt care for.