I am trying to build a web application, similar in feel to something like GMail, with one persistent AJAXy page.
I am told that GWT is the way to do this most effectively. However, I also want a framework that I can use for other things besides single AJAXy pages. Is GWT more scalable than this, or should I spend the time and build this thing in ASP.net MVC or Django?
I should mention, I'm trying to LEARN a framework that will be suitable for me to do whatever in.