I've had my phone 5 days and I can take it off charge first thing in the morning and go until bedtime the following day. Usage = constant 3g (not internet connected), a tiny bit of Wifi (set to always ask) no widgets other than OMWeather, probably an hours worth of browsing with prompted 3G connection, a good batch of SMS and a few calls etc.
I've just turned off touch vibrate but don't expect it to make that much difference, and I have screen on 4/5 bars because, well, screw having to get the phone right under my nose every time I check it just to save a little bit of battery
I'd really like to squeeze more life out of it though if possible.

I hear this wifi bug can be a killer and although I don't seem to have it, I'm concerned that when I hit the Web app for a quick email update or facebook check, it always searches wifi networks- does this mean it is constantly aware on wireless? Surely that's a big drain; is there some way to turn this FULLY off until I decide to manually connect when I really need decent data rates?