While I am sure that C&Cs are fine boats, I'd like to put in a good word for the Cherubini hunters, which includes the 1980 model you are considering. I own one and am very happy with it. I find the boat is very well built and suffers mostly from having the name "Hunter" associated with it. For my money, the Cherubini Hunters offer more bang for the buck than others.
Here's what I like about mine:
* At 27 feet, it is amazingly roomy.
* Lots of teak in the interior.
* Solidly built.
* Eight opening ports, two opening
hatches
* Shrouds connect to ubolts in toe rail - no chain plates to leak
* Slotted aluminum toe rail is practical (for attaching blocks and
fenders)
* Mine has the original Yanmar diesel and it runs great
* Very good engine access for maintenance
* Very stable, hard to get the toe rail in the water even when I try
* Massive coamings provide stable footing when going to the mast and secure feel in the cockpit
* Sails very well on all points.
I don't know how much more you could ask from a 27 footer. Please, don't confuse the Cherubini Hunters with later models.
Good luck!