I've had the WF for some sets now, first impressions are very good, feel more supported in overextended turns. Do have to say the manual is overly complicated for simple concepts. Ill keep you guys posted, but so far i feel it was a good investment before buying a new ski.
I have about 10 people with different proficiency levels in my site wanting to try it. I will do my best to do some riguroud testing with everyone and let you guys know what i find out