What to choose for view layer with spring 3 mvc? spring, ajax, technology, framework, something

amy

I develop web application with spring framework. I use spring IOC, spring security, spring mvc. For view layer i use jsp, but i find it inconvenient. I need in ajax form validations, ajax greeds, trees and other controls with ajax.

So, the question is: witch technology for view part (JSF, Apache wicket, GWT, Vaadin, Apache Click  or something else) do i use with spring MVC together for writing rich client application?