Please see my comment to the question where I explain why it makes no sense. The notion of "best" is something undefined.
One thing you need to consider first: C# and CLI is great, but on Android it will require quite costly Xamarine:
http://xamarin.com/platform[
^].
I wish someone could correct me. Anyway, Microsoft promises a great fix which is supposed to come with Visual Studio 2015, which is supposed to become available at the end of the year, with Community edition free of charge for source projects, educational, research, training and small professional development. Please read about it; perhaps you may want to hold on or address to Release Candidate versions.
—SA