My limited experience with the Cape Dory is that it was very pretty for its time. One either likes the lines with the classic overhangs and sheer--or not. For the sailing part, it points pretty well with the right headsail, but is somewhat slow to the weathermark and slightly wet with its fine bow and narrow lines. It is also a bit tender. The cockpit is modestly comfortable, and the interior accomodations are just about right to stow a couple of headsails only. The Montgomery, on the other hand, .......................................! I totally agree with everything that everyone else has said about the M 17. I have no experience with the 15. As proof of the pudding, we just bought our second M 17 to sail the cold, foggy waters off the coast of Maine because we wanted the smallest, most comfortable boat that we could find that looked good and was safe and FUN to sail in all kinds of weather. "Nough said. Skip Langley, Rockport, TX