Well i started with UnityScript which is basicly Javascript with some changes.
It is very easy to use and i think the only disadvantage is that you can't use the .NET features compared to C#.

So i basically used Javascript for few month, and then switched to C#. It's super easy to switch over to C# once you know all the stuff in Unity when scripting in UnityScript (JScript).

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"Tag und Nacht schrei ich mich heiser,
Wind weht alle Worte fort,
Tag und Nacht schrei ich mein Krähenwort!"
Subway To Sally - Krähenkönig