Really? Where have you thought of that? In my area, snowboarding is much "cooler" than skiing well for teens and young adults. I say skiing is for "old" or middle aged people, snowboarding is more extreme and i think its much more fun. But i dunno who thinks skiing is better than snowboarding.
Cross-Country is some serious skiing! Quite a work-out. I used to play soccer, and during that time I was able to cross-country ski. Haven't done it in so long I think my muscles would burn so hot they might actually ignite!
No, I haven't... unless you're talking about the Gazelle, which is one of the machines that is a subject of an infomercial by one of the exercise gurus out there. If so, I have in fact tried it and it does work well. Is that the one you mean?