I picked up some Head WC gs rd 35m skis and have been skiing them for around 6 weeks. They are the last year that Head made this radius ski and my experience has been fantastic. They give you fore and aft feedback unlike most any other ski,, and I am used to race skis. I started out skiing them pretty conservatively, which is counter to the way they should be skied, but gradually I kept turning up the volume, as I was making less mistakes and recentering more efficiently. Once I got the speeds up and drove the ski more, it was like a different world. I thought when I got them I would only ski them sporadically but it got to the point where every minute I was not coaching or instructing, I was on them, as long as it was a relatively smooth surface. Actually I used them coaching and on race days. They definitely improve your focus as they do not tolerate lazy, inattentive, skiing and reward constant pressure and aggressive motion. In order to fully realize the potential of the ski you must release the energy from tip to tail, and then recenter and start the process again. I think these can be used as training skis unless one becomes too defensive, in which case they could be detrimental to further development.