Choosing Presentation layer for spring application?

i was using JSP and YUI with spring applications and i want to use a new presentation layer like IceFaces or GWT 开发者_开发知识库or any other good one but i am confused what to choose i need to make a good looking view, and the technology must have a good support/samples, and easy to use, commonly used with spring, please advise, thanks.

I don't have enough experience in IceFaces, but GWT is really easy, rapid and full ajaxian. Also the SEO issues can be handled in GWT.

Although a bit old, check out:- http://woork.blogspot.com/2009/01/10-beautiful-web-ui-libraries.html