The white thing above the sink is indeed a propane instant hot water heater. I mentioned it in my post. The electronic looking things on each side are stereo speakers.
I think the Contest is the better boat - first impressions notwithstanding because of the paint prepped deck. I think the Contest has a better basic build, has a better sail selection, but it is older. Like others have said, it would depend on survey but if the Contest had no major issues I would think it the better choice.
I didn't read that the Hunter had cruised the Caribbean. Did the owner write the ad? He should work for a New York ad agency! He did make one mistake - the battery for the Yanmar is a group 24 12 volt battery but he has it listed as a 24 volt battery.