What is considered tier 1 for YuGiOh decks in 2011?

you mean like that best deck? well i don't think there is a best deck since most of the cards counter each other but for the sake of your question i would guess druguinty deck. reason why is because the deck has alot of combos and loops. although its a starter deck its pretty good. machines and draon decks are a good way to go. i dont run either but i know how powerful they can be.