Interestingly, a rather big/complex web ui was done in extJS and it looks like extJS will be abandoned for new projects, mainly due to: little control over gene

Interestingly, a rather big/complex web ui was done in extJS and it looks like extJS will be abandoned for new projects, mainly due to: little control over generated html/css and big performance issues, not i18n support, no code splitting, no unit tests and some other problems that seem to be solved in GWT. I, for one, am suspicious if GWT is really the better way, basically adding anotehr layer between browser and sourcecode. My feeling points me more in the direction of jQuery, which probably doesn't do all this out of the box but many of this from plugins.