Consider also the TAKACAT catamaran dinghy. www.takacat.com
My experience and thoughts:
boat came with a Walker Bay 8. Rowed extremely easily. Very unstable, but you can get the inflatable bulwark thingies. Very limited as to capacity; I was nervous with 2hp Elgin, me, and a big load of laundry. Couldn't stow it completely away, obviously. I detested it.
found a West Marine (Avon 10) air-floor. Hard to row, but carried a good amount of stuff. Stowable. Difficult to board, and fairly heavy even with the air-floor. Nevertheless, a better boat than the WB AFAIC.
Decided to try the Takacat Lite. So far, is as advertised. Rows pretty well, goes with the 2hp Elgin. Easy to board. Light. Can easily stow it. Floor did develop a leak, and the guy at Takacat contacted a local chandlery who repaired it, so although Takacat is not local, they dealt with the issue locally. the Lite is PVC so I built covers for it. If it dies I'd replace with a Hypalon version.
--oh, BTW, I'd never tow a dink. Did that once on a charter and it was such a pain. I'd pay whatever it took for davits, or get that thing on deck.
thass my story an' I'm stickin' to it