For mine he's younger and faster of foot and hand. I've crunched Sherro. Plus he's hard to beat in front of his legion of fans on the Coast. Admittedly, good odds if you fancy Nader too.
Sherrington is already into $1.45 and Hamdan drifting out to $2.15. If you're going to bet on Nader, leave it as late as you can. If you're putting money on Sherro, get in ASAP.