We too were looking for the same thing in terms of dingy and space was big option since we only have a 27'er that we do weekends on around the bay. Ended up going with the $799 West Marine inflatable, we got it $100 bucks off for the floor model. Its been great so far, we roll/unroll it on the foredeck and toss it right off the side as it is only 50lbs. when we're done it rolls up and stows away in the quarterberth. Typically we get it out once we reach an anchorage, tow it the rest of the weekend and roll it back up when we get back to the marina.
we originally were going to row it until we realized that was a terrible idea, not only for means of maintaining sanity, but also safety. This was a realization while rowing back to the boat after the wind picked up quite significantly after spending the afternoon ashore in rock hall (special thanks to a fellow dingy-er for lending a ride). A few days later "invested" in a 3.5 hp which put-puts it along just fine for our purposes.
if you're just looking for something to jump back and forth to shore I'd highly recommend. its not a high pressure floor but if you aren't going to plane and not going more than a few hundred yards at a clip, who cares. you can stand up, etc just fine on the slats. if rowing save yourself the frustration and go hard dingy.