JVM-based web framework

What JVM-based web framework to choose? There seems to be so many out in the big world, and all claim to be better than the rest. Some examples of the frameworks of which I am personally aware:

• Lift
• Play Framework
• Grail
• Struts
• JSP and related technologies

But there are many many more, with varying degrees of features, support, community sizes and popularity. Honestly, it is a daunting task to choose one for your own project, even if you know precisely your requirements. I read a rather nice review of available options, but after finishing it was not much wiser, unfortunately. Feels like if I do need to make a choice, I’ll have to actually evaluate a few most popular ones. Popularity is, realistically speaking, an important factor in itself - signalling that there will be better support from the community and, hopefully, more features and third-party extra functionality.