[xwiki-users] Trying to find a wiki software

Hey guys, just subscribed to this list. I'm currently stuck between two softwares: XWiki and Foswiki. What I'm looking for is: Speed/Performance Access control (Guests can only read and not modify, certain users can modify) Good theming/Easy theming. An overall good wiki with user-friendly UI. Foswiki is flatfile and xwiki is SQL based. I hear that SQL is generally better, is that the case? Foswiki seems to be pretty fast even if it is flatfile. Thanks :) - Eric