[Mono-list] Cross-platform GUI Applications

[Lee Jenkins]

Hi all,

I'm considering moving from a different language/platform for development to 
.net/Mono and I'm unsure as to what path GUI/Windowed application will take from 
now on.  I've done a little development with .net/mono over the last couple of 
years, but not enough to consider myself "comfortable" with the platform.

I want to write GUI applications that are portable between Windows (.net) and 
Linux (mono), but I'm unsure of what the best route would be.

WinForms?  WPF?

I don't mind developing to the least common denominator for GUI controls and 
such, but I am unsure as to which technology is

1) Most portable between .net/Windows and Mono/Linux.
2) Most enduring for the next few years?
3) Actually works ;)

Are developers successfully deploying substantive GUI applications between 
Windows/linux with Mono?

Thanks for your help and input.

-- 
Warm Regards,

Lee