My 2 cents. The grass is brown on both sides of the fence.

I had a 9900. Best BlackBerry I'd ever used, and I've had almost all of them, from the 950 on. Battery life was pretty bad. 6 hours max. That's it.

Got a new Nokia Lumia 710 Windows Phone 7. I'd be THRILLED to get 6 hours out of it. It is a small battery, with a large, bright screen; a bad combination. Waiting for an improved battery and the ever popular "next software version" to see if it gets better.