Rob, welcome to Myswag.
We bought a secondhand 2002 model Camp-o-matic camper, and as you say these campers aren't much different to the newer ones, just a little more travelled. The seconhand ones also offer a few extras, which the previous owners have added, and at no extra cost.
Good luck with the refurbishment of your Cub, and hope it gives you many happy trips away.