All very valid points, this is exactly why I post things here. Thank you all for your input.

I also need to look at this from a size standpoint. We will never be away from a dock for more than a day, even when traveling, our sister clubs are all day sails from each other. That said it is unlikely that we will need to carry a great deal of perishables on board. A small bag of ice, beer, small bottles of wine and sandwich makings, probably things to BBQ. Perhaps the way to go is a higher quality marine unit that has smaller dimensions. The 33l size seems to be sort of common.