Of all MVC-capable GUI toolkits, which one do you think has the best spefication and which one the most drawbacks ? In which one do you find your code easy to maintain and extend? Which is one do you find crippled (if any) and for what reasons ? I' m mainly interested in Qt and Cocoa but i would like to hear about others too.
Thank you.
I've been pretty impressed with Cocoa since I started using it. The frameworks make good use of design patterns and encourage (almost force!) a good MVC design. By contrast, I spent a while using wxWidgets (C++), which did the job, but is an absolute mess under the hood, and had lukewarm support.
Adobe Flex hands down is by far the best MVC based platform I have worked with and I have used all the usuals, like .net and wpf, Cocoa, etc. All of them pale in comparision to Flex 4.