tix vs. Pycard? for lightweight GUIs

[Stephen Ferg]

I'm looking for a quicker, easier way to make simple Python GUIs for
quick-and-dirty apps.

I've heard good stuff about PythonCard, and now I just heard about
Tix.  Does anybody have experience with both of them, to compare them?
 Or make recommendations or warnings about them?  Or have
recommendations for some other package that supports the coding of
lightweight GUIs?

Thanks mucho in advance!