I paddled briefly with a guy on Loch Lomond one day who was in a Pointer K2.
http://www.inflatable-kayaks.co.uk/canoes-kayaks/sevylor/pointer.htm
Had we not both been fully loaded I'd have likely tried to hustle a shot, was impressed by it's turn of speed.
Wasn't 'till we were within blethering distance that I even realised it was an inflatable.
He was doing the same as I do these days with the MacGregor - using a wee rucksack as a backrest. Looked the part.
Of the few inflatables I've tried:
The Sevylor Tahiti was cheap and handy but short so slow, the rough cover slowed it even more and they're impossible to recommend as out of the four I've known all four have blown along the same seam.
The Colorado is also short but it's wide enough to sit higher in the water. The width has it's good sides(you can kneel comfortably if you like and it's rock-solid stable) and it's not-so-good sides(mainly that it's quite a shallow and sweeping paddle stroke you end up using - you can't quite put in the same power as with narrower boats).
If I was after a WW river runner I'd be tempted by the Colorado, it had a take-on-anything feel to it.
The Gumotex Palava was pretty sleek, the bow design was more efficient than either of the Sevylors and it cut through the water nicely. I only had a quick spin while it's owner was having a shot of the Pack but it left a good impression.
Only thing I wasn't fond of was how tight together my knees were. If I was using one I'd probably ditch the seats and kayak it most of the time.
P.S. Meant to mention, the build quality of the Tahiti is quite a lot lower than the Colorado. I'd hope at the price that the Colorado wouldn't suffer from the same dodgy welding on the side cells.