If it was Windows Phone 7, I would consider it seeing the current hardware offerings from Windows Phone 7 are subpar for whatever reason. Maybe Android and iOS are inefficient hence the need for faster devices.
I can see a couple issues, namely both Windows Phone 7 and Android require 3-4 hardware buttons?
I've been thinking about it and it seems now my choice phone for next time I get one will be a windows phone, however I have a anti-microsoft bias thing which makes it difficult to adopt full-on windows phone, but I must admit they did a great job on it.
I will wait and see what iOS comes up with next though. I won't be switching phones for a while.