Yeah, I'm a happy camper too (see my posting above). I'm actually using the device just the way I want to: Wi-fi on all day long except weekends, then the occasional 2.5G connection (can't get 3G here now) during evenings and weekends, a and a little extra wi-fi on Saturdays.
I've got a browser (for gmail) open at all times, contacts for the gtalk group, calendar (or todo) widget, messages widget, ip widget, and on SIM.

I just keep a careful eye on the CPU before I leave the device, after that single occasion where pulseaudio emptied my battery (for no reason) over the night. Without such incidents my battery is behaving fine indeed.