This is the model I've bought. I'm a newbie on these, but it does the job. I got mine through Cabela's. The electric pumps seem a waste of time. The double action pump is really effective. Caught a 2 foot channel cat on an ultra-light couple weeks back from mine, worked just like a trolling motor.

Knock-down and assembly is easy and fast. It packs into their case ($50 on sale) with room for the pump and paddles easily. Mine will fit across my back-seat in my RAV4 with room to spare. I've had it on the roof rack and it traveled well, but I've seen warmings that moving up or down altitude can change the inflation(pop bladder or loosen tie-downs). Boston valves on this model will deflate before you can pack rest of gear into rig. Only ding I've seen is that if you want to mount a motor-battery combo it's a $100 optional deck to buy.