I think Cannondale makes great cross bikes - but I'm a bit bias. They have 2 basic frames and multiple groups. Unfortunately, to get my '09 CAAD 9 CX frame in a '10 they upgraded the groupo and added about $1000. They still have CAAD 8 based frame at the entry level, but I really like the 9 frame. They run big, but lifetime warranty for a stiff & light US built frame.
P.S. My LBS just got a Tri-Cross Single Speed in, looks like a blast for a flatter course...

