what skill is your best?

I gotta say, my answer 'math analysis' finished last. Here's an important thing missing from the question...what game are you playing? I like limit (or often PL) Omaha HL. And while reads and such also play in, and heavily, you better know what your outs are and understand the board and the action on each 'street' (i.e a low on the turn, river, or board pairs up etc).