I've been doing development with Rails on personal projects and while Netbeans isn't Visual Studio, it's still a pretty solid development tool.

I also dig how the local Rails environment shows you every call that's being made, plenty of solid logging integration, etc. Also the gems and other libraries being open source and freely available is great, and Ruby crushes C# with regards to Metaprogramming if you're going to go deep (which you probably will).

The debugging style is different but it's definitely several thousand leaps above ASP/VBScript. You'll be more than fine.