Just got back from Park City.
Anyway...AVOID Mustang. Hotel recommended when Zoom was booked and it was deeply mediocre. Very expensive (I later realized more than others that had been recommended here) and so not worth it.
On the other hand we went to Wahso another night...also pricey (though not as much) but totally worth it we all thought
To the other extreme..went to El Chubasco and all thought it was terrific. But it is order at counter kind of place (they bring food to table) and self serve at the fantastic salsa bar. Very very casual and local...but delicious.