Every single hotel in Las Vegas has a steakhouse that they tell you is the best one in Las Vegas. Somebody has to be wrong.
Luckily, Mirage is not wrong. Their steaks are all so tender that there's really no need to even order the Filet, you can order any of the cuts and get more flavor and the same tenderness.
The decor is steakhouse-ish, with it's low lights and dark tones, but the crowd is lively, they have an excellent bar, and the music keeps things pumping. It's also got one wall open to the casino that allows the crowd outside to add to the vibe.
The appetizers give you some balance to all that protein and you won't find a better appetizer in any restaurant than their Crunchy Tuna Tacos.
If you want some post-Stack entertainment, you can always go to the side bar near registration and hang out with the hookers. Great steaks and free entertainment!