I have been snowboarding for the last few years and I want to get back into skiing. I have it sort of narrowed down to a few skis, the Volkl Unlimited AC3, or the K2 Photon or the K2 Shockwave. Does anybody have any good advice on these? I'm 6' and 170lbs, I'm looking at 163 skis. Is the waist width of 78, too big for a intermediate skier? Thanks in advance for all of the help with my many questions.