I don't know anything about the first 2 boards, but can sort of speak to the Legacy-R. I say sort of because I own the SL-R, which is the "normal" width version of that board. Anyway, I was more or less in your position when I bought it, and was also concerned that the board would be over my head. My experience with the board has been the exact opposite. I was coming off a Ride DH, which is pretty flexible and forgiving. I immediately found the SL-R easier and more fun to ride, and felt like my riding improved dramatically in a short period of time after getting it. Super responsive, super stable, but I never felt like the board was riding me. Easy is really the best way I can describe it.