Really?
I think most people would say the first three gens are the best, at least I would anyway. Gen 2 is awesome because it's twice as long as all the other games.
You should totally get back into pokemon, I really want to, but can't afford a 3Ds right now. If you haven't played gen 4, I'd recommend pokemon platinum because that is a great game too. Haven't played black or white but I heard those are good as well.