Re: 30 vs 33
I would never try to talk anyone out of a C&C-- they're really great boats. However, I would make one qualifying statement based on my own experience. The 70's vintages (and the later ones for the most part) don't adapt well to dodgers and biminis. They weren't meant to. You won't see many C&Cs of any vintage carrying canvas.
On the 30 Mk 1 the boom is so low over the companionway that fitting a dodger is problematic- it has to be made so low that it's not very usable. Likewise, biminis have to be made very short to clear the boom. The Mark 2 is better because they raised the boom about a foot.
For all its good qualities, my wife really doesn't like the boat because of the lack of shade and wind protection. If that's an important feature for you or your wife, you may be better off looking at other boats. For something of comparable quality and feel that tends more toward the cruising side of cruiser/racer, look at the CS.
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio