Well, tried it and here's my veredict:
-Nice and clean interface
-Lightweight and fast
-Can't open cuesheet files (.cue)
-Doesn't integrates with the new Last.fm player (so I can't vote to Last.fm on songs in my machines)
-No custom display of information in playlist
My first reason to do not use it is the cuesheet support, I preffer to rip albums in a single file because gapless and that, but they will never support it
I like open source idea, but don't like the project admins says things like: -if you don't like our way go back to foobar.