i am in btech final year with ece stream 1.which courses is best for me and why?2.which is best java or .net?3.which .net is best asp/vb/c#?

i am in btech final year with ece stream. my questions are:- 1.which courses is best for me and why according to my stream? 2.which is best between Java or .net according to job criteria and why? 3.which .net is best between (asp.net/vb.net/c#.net/c++.net)? plz give me detail of these institute.