[keefe]

Using a single language on the front and back is a very nice plus, especially with ecmascript 6 support. My current job is doing that and it makes it much easier to break off features without having to get the server guy (me) involved. I personally feel like there is more javascript out there as well, so it's points for staffing.

C# I think is probably better documented, with fewer hair pulling bugs (I will frequently have to read code in a library to understand how exactly to use it in nodejs) and I'm very much missing a standard threading system, but I think early on it's more important to go fast so I would vote full stack JS over JS + .NET