I hear all this about low sidecut kite specific. I ride an old burton Terje 152 with pretty rude sidecut and never had any problems. I do ride mostly powder and that couls be why. Its not often i ride hard pack or ice. Heck who wants to ride on ice???? I may have to try one out to see what all the hype is about but i think thats all it is"HYPE"
Most kite & snowboard makers are farmed out from factories in China etc to the mfr's specs. I don't know about Nobile or a couple of the others mentioned above but I do know there are 2 board builders that make their own stuff in-house and the quality of the build is top notch. Never Summer and Venture. Never Summer has a model called the Heritage and Venture the Helix which offer a design that should maximize versatility of use.
I agree with the flatter sidecut and rockered shape being positive for kiting. Too much rocker and reverse sidecut don't work quite as well in certain circumstances if you want to use the board for riding downhill without a kite. Look at shape and quality of build as the main specs you want - not so much if its kite specific - unless all you want to do is kite with the board. Venture offers 2 years & Never Summer 3 years of warranty....obviously you can't smash it into a tree and be covered but they are really stand-up companies. More coin but quality that is worth it.