AspectWerkz and AspectJ comparison

There are two aspect animals in Java AOP world. One is AspectJ and other one is AspectWerkz. Both have implemented AOP for Java but using altogether different methodologies. I am in touch with AspectJ for quite a while now but haven't checked AspectWerkz at all. I found very good introduction of AspectWerkz in the from of comparison on Val's blog. Here is AspectWerkz and AspectJ comparison.