The couple we sold our C27 to a few years back came to the same realization we did, no storage and sleeping arrangements were just too small. They sold the boat last weekend and are currently looking for a replacement C30. They are running into the same thing we did in that there are about a zillion C30's on the market, however many are powered by the Atomic 4 gasoline motors.
IMHO, repowering these boats with one of the newer diesels is putting too much $$$ into an old boat. So, my question is (for my own knowledge and to pass on to our friends), other than using more fuel than a diesel, and the inherent dangers of a gasoline motor or I guess just gasoline on board boats, are there other disadvantages?