I tried Lucid and Protean and although they're nice, I have to poke around and think too much to figure out how its all tied together.
Decorous with its split menus on the left and right makes it so simple to use and mindlessly navigate and add things, that's what wins me over.
While you're here, check out FlirtingInTraffic dot com and if anyone can post some URLs to some other UNA sites, I'd love to have a look at how others have theirs customized! Such a wonderful product but I'm curious how mine compare to others. :)