Personally, I like Infinity On High more than From Under The Cork Tree.

FUCT has some great songs, but...eh.

Take This To Your Grave is my favorite album, then Infinity On High (which I believe is their best), and From Under The Cork Tree and Evening Out With Your Girlfriend are about tied...maybe FUCT a TEENSY bit more.

I also really like their acoustic EP. If you like acoustic stuff, you should check that out. If it was a full LP, it might just be a contender for my favorite FOB album.