We bought the Hobie inflatable two person kayak a couple of years ago Hobie Mirage Inflatable Tandem Kayak i14t - 2013 - austinkayak.com - Product Details
. The Hobie has the Mirage Drive pedal system that lets you either pedal or row. Our inflatable is very stable. I'm pretty heavy and between my wife and I we're at 450 pounds. The pedals make it fun and fast. We do mostly lakes, rivers and ocean bay/breakwater area without issue.
We use an electric pump to inflate the kayak in about 3-5 minutes. It has a couple different options for wheels that slip under the kayak for transferring it to the water. They also sell large sand wheels.
The entire kayak folds up into a bag with the exception of the Mirage drive pedal system. The bag is approximately 18" x 36" x 48" and weighs about 75 pounds. It has wheels on one end like luggage. It's ackward to handle, but our friends stow theirs in one of their storage bays. We don't have a bay that it will fit, so I carry it on one of those Harbor Freight hitch racks.
Depending on how you'll use it and where, the inflatable is a good choice if you don't want to have to figure out how to carry a hard sided model, especially a two seater.