Web App Frameworks Showdown

Who has the guts to play for blood and skin their smoke wagons at the Web Application Frameworks Showdown?

Translation for those that didn't just watch Tombstone: What web application frameworks do folks like?

Also, I'd like to identify what criteria folks would use to rate (or choose between) web application frameworks.

Some additional context for this conversation:

The focus is on non-EJB frameworks. As in, whether EJB's are supported is irrelevant.

Yep, some of this is religion. So be it.

Yep, web application frameworks have been compared before. I think we can do a better job of identifying rating (or preference) criteria, and gathering focused opinions.

Some web app frameworks to consider: Struts, Spring, Tapestry, Trails, Shale, WebWork, Cognition, Wicket, Facelets

Some judging criteria:

Developer Testability - a measure of the developer's ability to developer test (a.k.a. unit test) web application components

Tools Support - a measure of the quality (and number?) of tools (e.g. IDE plug-ins) available

Matt Raible's Java Web Framework Sweet Spots is worth a read.
[ April 26, 2006: Message edited by: Bruce Coleman ]