I think jQuery based components coupled with an action based framework are the way to go. You get complete control over the page, very few surprises, fast development, and ultimately faster page performance.
I've built apps with both JSF, and MS ASPX + DevExpress components. In the end I just want more control over what ends up on my page. jQuery is HUGELY popular, so there is no lack of JS talent in the market. Ajax is almost a no-brainer with jQuery too.
Also, for building database driven wep apps in Java nothing beats the speed of the Tagger Cat framework. It may be old school MVC, but it is seriously database focused, and nice to work with.
