It really depends what kind of sound you like. The bends is straight up indie-rock and easy to listen to. Ok Computer is a bridge from the Bends to Ok computer and Amnesiac which are much more experimental, and my two favorite radiohead albums. Hail to the thief starts turning back towards ok computer, kind of, as does in rainbows.

"I Might Be Wrong" is a live recordings album and is nothing less than stellar.

Cheers,

J