Personally, from a web developer perspective, I'd rather stick needles under my fingernails than debug mobile IE compatibility issues ever again. In general, though, after being an Android user for the past 3-4 years, Windows Phone just doesn't have the flexibility and choices that Andoird offers to make me even consider it an option if I ever wanted to switch, not to mention their app store still has really notable apps missing (like Instagram). It's a damn shame, too, because the phones Nokia makes are all really well made, have attractive designs, and have some of the best mobile cameras. An Android-based Nokia smartphone would have done gangbusters, imho.