JIBIJIBIJ   ....at least that's where everyone in CO should buy their skis from.
but since i haven't bought a pair of skis since before they opened, i'll tell you that i bought my frnt's at mountain sports outlet in silverthorne.  not the worst shop you could go to, just a place with a decent selection of twins, plus the whole downstairs is a snowboard shop, with a bunch of cool apparel.  christy sports is probably the most easily accessible place of business that sells twins, but i doubt too many people who work there actually give a shit about the sport, plus it's really overpriced.
i live in ft collins (two hours away from the nearest ski area)  and the only place to buy twins here (aside from gart bros) is a place called outpost sunsport.  only place i've ever seen Zag skis for sale (one pair for like $1100).  but i don't think any of the guys that work there have ever so much as slid a rail in their lives.  i heard a rumor that a wakeboard/snowboard shop up here will start carrying only twintips next season, but that's still up in the air.
-Strode
Only in my sweetest dreams do my streams lack troubled waters, shallow pools full of shallow fools...