Both good products - so I'll stick with Glassfish, thanks
I really hope Oracle doesn't screw up Glassfish - it's so much faster than Tomcat and so much easier to use in many ways. And JBoss is just a massive mess as far as my experience goes.
I've had quite good experiences with both WebLogic and Glassfish, but the developer restrictions on WebLogic (5 unique IPs) is a right pain in the butt when it comes to testing, so for most things I use Glassfish.
I hope they don't screw up MySQL too, while we're on the subject. I don't have much faith...