[orangekid]

I get just as good battery life on Android as I do on WP7 if I tweak my settings, choose my kernel wisely, pick a good scaling governor, and set good profiles.

The thing is that in Android apps running in the background are mostly managed by RAM and don't really require much processing so they don't chew up battery really, I can get a full day out of WP7 or Android just fine.

Android requires a more experienced user, if you have 4G, WiFi, GPS, and full brightness turned on as well as refresh for all your widgets in 30 seconds and a bunch of crap open as well as using ATK every minute because you think freeing up RAM will help something in Linux then you won't have battery for shit, but both to me are just as good.

I use Android to tether, stream music (while multi-tasking), USB storage, and some apps and games.

I use WP7 for Netflix streaming, so I'm good with both ATM, just gotta tweak each to fit you.