Re: C&C 29 - Mark 1 vs 2
The MKII is a more modern design, probably a bit less tender than the MKI, and it has nicer tooling/ crisper look than the original. It's also probably the smaller of the two boats, at not much over 28'.
The MKI has a pretty decent rep too, though, despite that particular vintage (along with the late 70s 34) having the reputation of being a bit tender. They are also relatively early forays into cored hulls so that bears looking into.
So in the end you'll have to get on both, with luck sail both, to decide if the price premium of the MKII is worth what you might gain in amenities or 'newness'...
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"