So far, Skyfire seems to be the best mobile browser for my Verizon XV6800. Since Skyfire isn't publicly available for anyone to download, you have to sign up for their private beta testing program. One of the best features of Skyfire is that you can easily select your zooming area. You can just tap and drag the edge of the zoom box to fit your screen. The other great feature is the built-in Flash player.
Still testing and comparing with the other mobile browsers, but so far Skyfire seems to be the best one.