gdgt

Can't say exactly yet on overall life. I had mine fully charged when I went to bed, but forgot to plug it in. Used it for a 20 minute phone call on the way in to work and a podcast the rest of the 40 minute drive. I've used it probably sum of an hour so far the rest of the day, and 16hrs in I still have 33% left (it estimates 4 hrs).

I have three e-mail accounts on push, and have been on WiFi probably 8 of the 16 hrs, and auto brightness. Bluetooth was used for the initial phone call, and is on, but nothing is in range that it's paired to. There are about seven or eight live tiles getting refreshed at different times on my screen.

Given all that, I'm pretty happy ;-).

Rubik - I wish I was getting that good of battery life! Share your secret! =)

StriderNo9 - I'm in the same boat as you. I use mine roughly the same amount as Rubik, but when I go to bed at night, I'm around 10-12% from a full charge in the morning. I'm less than thrilled with it to be honest.

Good so far, compared to my recently exchanged Skyrocket and better still than my old Sensation. I keep all radios off unless I'm actively using them. Email is often the culprit for poor battery life and WP doesn't help by defaulting most syncing to every 30 minutes.