I finally was able to ski on my Radical WC GS Masters this past week. At this point of I will give a limited review of this ski as I have only been able to ski with them on ideal packed powder conditions on a small hill.
I believe that this ski will become my new all-time favorite all around front-side ski. For the power that the ski can generate in a turn, its turn initiation is really easy. This ski initiates a turn nearly as easy as my Rossignol Radical S slalom skis, but at the same time does not have an issue with running straight. This is something that can not be said about the Radical S which only wants to be turning. Stability of the GS Masters is exceptional at the highest speeds that I could obtain on the little hill that I ski on (40-50 mph range). I will further further comment once I use this ski on a larger slope. The GS Masters does well on fore and aft body movement being somewhat forgiving if you get a little to the back seat and at a 174 cm length there is something up front if you get pitched forward. However be prepared, if you load up the ski as it can generate a monstrous amount of power. You can easily vary the radius of the turns, even in the middle of the turn. Even though this is a GS ski, you could probably carve through an open section of a slalom course as you can initiate quick short radius turns at its design radius of 18 meters. On packed powder this ski is a great carving machine that can generate a lot of speed. I have not yet used the skis on ice or in a race course and I will provide comments once I have done so. I have yet to find a weakness with the ski. If you are a advanced skier or better, you can ski it easy and it does not complain or try to bite you or you can get very aggressive and release all its pent up power! The only negative I have is that it is a very expensive ski and since it is in limited production you probably will not find a pair to demo. So you will have to risk big bucks on a ski that may not suit your requirements. Fortunately for me, at this point I love it! This ski for me is a significant step up in performance and capability over the ski it replaces, the Fisher RC4 World Cup RC's (175cm).
From a reference standpoint, I am very aggressive, high level skier at 5' 9" and 172 lbs. I am a PSIA level 2 ski instructor (with 39 years of experience), an USSA race coach and club racer (Nastar National handicap varying between 12 to 14).