Ajax frameworks

[twcrone@xxxxxxxxxxxxx]

I'm currently
researching Ajax packages.  I have experimented with DWR for RPC stuff
and played with GWT very little.  Other than that I am looking
primarily at Dojo and maybe ICEFaces if my shop decides to use JSF. 
I'm curious about TIBCO GI since TIBCO now sponsors DWR.  I saw Stuart
Halloway's session notes on Prototype and Script.aculo.us.  

My
shop is currently very committed to using Spring and has used OpenLazlo
in the past but we don't want to use it for our future work.

What is everyone's favorites now?

As always, thanks for the info...

- Todd