I have been using Jboss since a couple of years, in its version 5.1 that is robust and "flexible", but this new version seems to be fast and customizable. Features like changing ports and real authentification are easy to set up reading the doc a little. Mayble in a couple of months it will be stable and the "only eap fixed bugs" will come to the community version, in that time I would choose it.
The "only eap fixed bugs" are already in the community edition (7.2.Final), but JBoss cleverly called it EAP-alpha/beta this time. So hordes of people don't download it, being scared off by the alpha/beta label.