I like Kurt's standup slightly more than Pete's. While there are definite similarities, I'd say kurt is a bit zanier for lack of a better term.
I prefer more zaniness as well. Kurt's willingness to take things even further and get weirder is what is going to make him pretty popular soon enough. His run on BUNK! was great (I can't think of a more perfect person to cast as the host. He looked at home there).