C# or Java

Hi,
I want to learn(I already know the basics of both) either C# or Java. But I don't know which. So /prog/ please compare the two language for me. Language features/how well it is designed/etc. are the things which interest me.

C# is superior to java in every way. Linux is unimportant, really - it's presence on the desktop is so vanishingly small it may as well not exist. Nothing you write to run on a server is going to be in java (probably not C# either unless you work for MS, but you are the one who choose the two options).