Security in Grails-app: Acegi or Shiro

Question

i'm developing a Grails based web-application and i need to choose one of these two frameworks for authentication. In your opinion, what criterions favor the choice for Acegi and what criterions favor the choice for Apache Shiro?

Answer 1

I would also like to point out that Springsource officially supports the "Spring Security Plugin", so with everything else being equal, the "Spring Security Plugin" is the better choice to me.