I actually own an xlider. They are great and take about 3 or 4 attempts to get rolling another 4 to get good enough balance to use the more complicated walking like movement to propel yourself. It feels like snowboarding with the fluid motion and turning ability. Have not tried any other product like it and i am a snowboarder, bmx biker, skateboarding and anything else that can make me a vegetable. The Xlider compares to rollerblades, a skateboard and snowboarding all in one. I do find that at speed they do get wobbles if your skill is not at the speed your going, its like the board knows your skill and it wobbels, you either slow down or eat shit, hard.