> (The libraries are not nearly as clean/consistent as Java though.)

I've had the complete opposite experience. I've found when it comes to libraries, C# has fewer, but higher quality than Java ones. I've also found C# to have a much more intuitive standard library. In C#, I can often just figure out how a standard library class works purely through the type system and the IDE, while in Java, I'd have to search through documentation more frequently.