Yeah I'd say Cannondale's are gonna be your best bet. I had a glued aluminum Miyata that looked/rode nicely but was quite flexy and I wouldn't put too much faith in it's strength (also you could never re-paint it). A friend has a Raleight Technium that he says is OK. Your going to really want something with larger diameter tubes, nothing that looks like steel.
I have an '89 Schwinn 754 that rides amazing and looks really cool. See if you can find one (they also made a 574 and a 974). They are Klein rip-offs and were some of the last quality bikes to be made in the USA plant.
Pic:
http://www.pedalroom.com/p/974-schwinn-1975_1.jpg