.NET Connector with VS.NET or Java Develoment with Eclipse ?

Hi,

as an additional to my Abap programming i want to learn an additional language / Environment for programming SAP-applications.

What do you think is more worth a look (and why / or why not) :

- .NET Connector with C# or VB.NET

- Java with Eclipse (and all the J2EE Stuff)

cheers

Henning