Replying to Making a trip to switxerland, where to go?

i am from the US, and planning a trip to switzerland next march, or at least thats when im guessing it will be good. so, i was wondering what are your favorite resorts, or what are the best. and maybe wheres the best place to stay, like town wise.  wanna make the most of it. also is the second week of march good time to head out? thanks a ton

o and i like expert stuff, steep, deep snow, and ski a bunch of park. if that helps any.