Ok here's my review.
Tony had the kites set up on an ozone bar. Out of the box we had to put some rear line extensions on (which is recommended). This got the kite flying in the right without too much back stall.
First up I flew the 5m. That was a fun kite. It flew like a normal traction kite but also you could stall and pivot loop it easy for some aerial gymnastics while flying. Upwind was good. Better than my lei's but not as good as my Chrono.
The 7m was less pivot turney and flew slower as you would expect with a bigger kite. My gut feeling was that I wanted a bigger bar on the 7m.
Power per meter squared was similar to a fixed bridle. The 7m was a similar output to my 10m lei. Power delivery was smooth, the kite lacked punch until you got some ground speed up then you felt the power and speed turn on smoothly.
The kite really likes to pivot turn. Which means it looses power through the turns, but it does a tight radius turn for it's size. To do a powered turn you need to ensure line tension on both steering lines. It's a technique that would take a little while to master on each size kite. If you like powered turns this is the only real down side I found on the kite.
Running down wind slack lining the kite showed good drift. It simply floated back in the window without bow tieing.
Letting the bar go when powered up would depower the kite and make the trailing edge flat.
Bridlles follow a standard methodology and there's a normal 2 pulley speed system. The speed system isn't adjustable and the bridles running through the pullies are a little skinny for my liking. I would mod the speed system with thicker bridlles and make it adjustable.
All in all I enjoyed flying the kites and think they make a great buggy engine. I would buy I set for adventure riding sand dunes if I had the cash.