I've always looked at Scala as a great language to go to if you don't want to be on the .Net stack. But if you're happy with the .Net ecosystem, the combination

I've always looked at Scala as a great language to go to if you don't want to be on the .Net stack. But if you're happy with the .Net ecosystem, the combination of C# and F# are very tough to beat. The tooling is great, and the languages are really well thought out. I don't really know what benefits there are to gain from using Scala on .Net other than the fact that it's cool that it could be done.