Replying to Best place to ski in Switzerland?

Hey team, me and my girlfriend are planning a potential trip from NZ to come ski over there, we have no idea about pretty much anything yet, just wanting to get idea on the best places to ski, we're both fairly experienced skiers and the only other place we've skied overseas is whistler and loved it. We would be spending probably just over a week as it works for Uni holidays and want somewhere that's not ridiculously crowded or expensive. Any suggestions?