I can speak for the 4m buster 1's. Their awsome. I don't know how useful a 4m depowerable would be, you would need pretty high wind for it. ( high wind+ snow= verrrry cold) The buster isn't as lifty as say..a blade, which is good for buggying, so you don't get pulled out. But thats bad for landboards, and snowboards (or so i assume). Thats not to say you can't use a buster for boards, it's just a bit harder. Anyway. Buster. Great build, nice bridles, decent bag, good handles, good lines.