You can't go wrong with zermatt or saas fee. these are big resorts, both have a good park and good overall riding possibilieties. laax is also one of the most known in Switzerland. One of the best parks and the resort were the orage european open took place. also good backcountry and slopes. My home resorts are adelboden and meiringen-hasliberg. adelboden is a smaller resort, so it's less crowded and it has in my opinion one of the best parks, but no pipe. backcountry is decent. meiringen-hasliberg has great backcountry opportunities and also a good park. in the french part of switzerland verbier is the most famous. There is also Les Crosets, which is the swiss part of Portes du Soleil, the biggest resort of europe.
But Switzerland is small, so you can easily go from one resort to the next resort within at most 4 hours.
To learn more about the resorts just google them. they all have a informative webpage in english.