How many know Android is made by Google? They just know the brand they buy, like Samsung or LG. It's the same for Microsoft. Only geeks know the maker of the OS.

In my opinion, Windows Phone 8 would be great choice to support. Windows Phone 7 has shown that the market place is mature and most importantly, users of WP devices are filling to pay for apps. This is in big contrast to Android where most users will just try to get either your app for free, or only download free apps.

On top of that Windows Phone 7/8 supports the fantastic developer tools that is Visual Studio. There is no better IDE around and I really wish I would have it on my OS X.