[jboss-user] recent comparison with Grails (no troll)?

Hello, I've just finished reading Seam in Action and waiting in the mail for the new copy of the Seam Framework book to cover the 2.1 security changes. Seam looks very cool and I'm quite interested in the support for instance-level security. For an upcoming new "enterprisey" project, I'm considering both Seam and Grails and so far I don't have enough information to lean towards one or another. I used Grails briefly only. I've googled for recent comparisons (2008 or later) but haven't found anything and older reviews are not relevant any more. Any comments would be helpful. This is not a flame/troll. Thanks, Kelvin