Have you tried TypeScript ? I think coming from a C# background TypeScript and his integration with VS will be a breeze.
that's exactly how i got started :)
in hindsight, typescript was the ideal way for me to migrate from C# to Javascript. now I can write "pure" javascript without typescript holding my hands, but i do greatly prefer having typescript around!
the only drawbacks of typescript (visual studio) I see right now is lack of debugging support for nodejs, and lack of angularjs intelisence (webstorm supports that well)
Doesn't 2012.2 and the web developer add on really improve intellisense for js libs (among many other things)?
I'm a C# dev... and it feels a lot like going back in time working with other toolchains sometimes (especially on the SQL side of things).
That said, I would consider myself an expert C# developer, but unfortunatly needed to move to javascript (nodejs/angular) due to the limited deployment+ecosystem flexibility C# provided. A real pitty, C# and Visual Studio are best-of-breed, and very powerful.