+1 on the Vittorias. I have Diamantes mounted right now, with a pair of Rubino Slicks waiting in the wings. I have ridden several models of Kendas as well, and find them to be good bang for the buck.

I've never ridden the two that you mention, but the Bontragers sound like they'd be heavy. It depends a little what your tire need is. Heavy "flat-proof" tires are great on my commuter (Panaracer Paselas here), but not so much on the "go-fast" bike.

Indy has a good point about tire pressure. I'm about your weight, and rarely run more than about 105psi, even though the Diamantes are rated up to 150psi. Might be something to experiment with...