>>29704871Gen 1 was my first
Gen 6 is my fav, its a tough call against 4th I'll explain why in a set. I like that Gen 6 really had a huge dex for XY and you never could be sure what you'd find in the grass cause of massive encoutner tables, there was the 3d transition, customisation, and the bottom screen gimicks made it kind of feel like I was back on the playground again trading and battling at random, it was a real trip/revival for me.
Gen 4 has a special place for me cause I left the series immediately after red/blue and felt I'd outgrown it. Gen 4 and its usage of the DS features got me back into pokemon and refreshed my enjoyment, causing me to go back and play Firered, Ruby/Saph, and get Heartgold to muck around with. My wife had grown bored eveyr since Gen 4 and had actually dipped out of the series till I showed her how good XY was and it revived interest completely. ORAS was boring bigtime, but we both have high hopes for Sun Moon.