This is my go-to bar. I'm not into the scene at places where there's a lot of loud, obnoxious frat boys. Four Peaks isn't especially quiet, mind you. They play pretty good music for the most part, and almost every time I've started to groan because of the song that just came on, someone who works there changes it. The service is a little slow, usually, but I honestly don't care. The food is amazing, and the beer... oh, the beer. I love the Sunbru for warmer days, and the Oatmeal Stout when its chillier out. I always end up drinking a little more than I planned because they're so delicious, and that leads to me splurging on appetizers. My favorite is the spinach artichoke dip.
All of their beers are worth trying, since they brew them there you're not going to get them anywhere outside of AZ, as far as I'm aware. If you don't know where to start, for $9 you can order the sampler, and get a tiny glass of each kind of beer they brew, then decide for yourself.
Short version: good food, good beer, one-of-a-kind establishment, go, now.