I really love Myo, and it's mostly because it's a complete experience...great food, great location, great environment.
Lunchtime diners will benefit from the amazing view, but dinner is busy and fun as well.
To everyone who has balked at the prices: yes, it's expensive. But as an American living abroad, I can tell you that I have never been anywhere that is as outrageously expensive at Switzerland. Everything costs more there...so sadly you'll have to get used to an 18 CHF/21 USD sushi roll.
Dessert is truly fantastic. The molleux de chocolate is perfect, and go for the ginger ice cream.