I had that bike too in '86. For me (and a few other guys said the same thing), it consistantly felt like I was riding with a flat tire. But others loved it. I knew a few Cat 2 racers who said the same thing. Bizarre. I think when you are used to the little tiny bumps and folds on the road like you would on Columbus or Reynolds tubing, that "Cadillac" feel of Cannondales was foreign.
I did eventually sell it and got another rad Cannondale but a MTB. It was a really good racer and those Ringle parts back then were the rage.
With that said, I see a CAAD 9 on ebay my size in just a frameset....hmmmm and I have xmas bonus money from work.....