Pokémon Generations by Pokémon

[Monobrobe]

that and you also didn't have 10 year old linkin park coolkid shit like deoxys or darkrai or arceus

I'm curious as to what you mean by this. Is it their designs you're talking about, or how they work in battle? I'm inclined to say the latter considering you focused on that while praising Gen V.

I'm naturally heavily-biased towards Gen III, but if I had to choose...
I'd agree with Kosheh and say Gen V is probably the best. It had 100% new Pokemon, absolutely no old ones or evolutions for old ones. It was an exciting experience going through the first time and seeing all the new Pokemon.