I'm trying out Tear, but I've found that MicroB is at least as fast running the User Agent Switcher and set as an iPhone. It's easy to switch back if need be, and I don't mind iPhone optimized pages at all. Certainly sites like Facebook, Dropbox, Gmail, and a number of my blogs load much faster and are pleasant to read. Also, be sure to remove adblock. I'm glad it's being worked on, but it really seems to slow down my browser.