>> "Value Types, such as a 'Complex' type require a full object in Java. This has both code speed and memory overheads."

I have programmed in C# and C++ (never Java), but I found the above to be the key issue why my programs would run significantly slower with C#. Here's the C# language discussion thread where I posted details about my issue:

http://social.msdn.microsoft.com/Forums/en/csharplanguage/th...