Thanks for your suggestions! I like the Southern Cross particularly - people seem to be asking quite a bit, but if the market is as you say, then things look better
Regarding the requirement for a full keel, the more I read about righting moment, the more I like the idea of a boat that has a lot of it. I just don't trust my own skills to be able to avoid knockdown conditions, and I want a boat that will forgive me if it happens. Donald Street made a pretty convincing case for a full keel in "The Ocean Sailing Yacht", IMHO. Also, it would be harder to foul the rudder on crab pots, etc. I'm aware that there's an endless debate about keel types, but that's the side towards which I feel myself gravitating.
I found out about the CD25D from John Vigor's "20 small sailboats to take you anywhere" which stated that it had 5'11" headroom in the cabin and 5'9" in the head compartment. That seems to have come at the expense of storage and tankage, however. The 28, like the 25D, is an Alberg design, and while some people on this board seem to have mixed feelings about the Cape Dory
line, it seems to have earned decent marks even from those normally critical of the brand.