Love the simplicity.
So flexible, extensible, NPM, great library support
Using DevStudio with NVTS plugin for development. Best of both worlds.
I can run locally, debug, intellisense, integrated unit tests, profiling. The best environment for node development
We can't afford the licensing tools necessary for .NET. We like the scalability of node.js and the fact that it is open source. We are finding, however, that there are not as many experienced node.js software developers and we expected.