I have used these straps since their proptypes last summer and I have to say the design changes are huge from last year to this year.
Note.... Disclaimer... I sell these at my shop.. so keep that in perspective.
The Comp Strap is my personal favorite. You can adjust the width of the strap in where it attaches to the footplate. Because they are integraded together, taking off the straps are dead easy as it is all one unit.
The comp setup is easily misunderstood. It is not a ratcheting system. It doesn't tighten down on your foot. You loosen the dial to adjust... set it where you want... and then tighten the dial. The pre-molded strap that sets and WON"T BUDGE. Set it and forget it. No more slipping cords or anything like that. The sucker isn't moving.
The toe bar is adjustable, and awesome. Set it before your put it on your board, and it works just the way you want it to. I love toe bars, but in the past I had wished they were a little bit further back to match my toes better.... but couldn't do a thing... NOW... the toe bar gets set exactly where you want it....
The Lux Staps were my second choice and have a more traditional and soft strap that is velcro. It is a huge velcro to velcro connection, so these aren't budging too... but they aren't pre-molded like the comps are. Some prefer the softer Lux... whereas I prefer the rigidity of the Comps.
More info on the products here (comp) http://www.kitepaddlesurf.com/2011-Liqu ... mp-Kit.htm
and here (lux) http://www.kitepaddlesurf.com/2011-Liqu ... ap-Kit.htm