I was looking to buy a new champ and im wondering who's the best carry?

If you're talking about ranged AD, Ashe or MF

If you're talking about melee AD, apparently Irelia (Xin's cool too)

If you're talking about mage, apparently Ryze (wrong take Annie or Anivia)

Xin Zhao without any doubts.

Nasus. /thread.

Alistar

There is none

But corki is probably better by a very small margin

But whatever you do don't buy cait (even if she is fun)

well, i'd say poppy is the best carry since she has a tendency to actually carry enemies and smash them into walls.