From solely the drinking experience, O.H.S.O offers a great time with a good selection of brews and whiskeys.
My bros and I had our fill of Four Peaks and wanted to find the next location. Luckily our next stop was practically next door. On a late Saturday night O.H.S.O was relatively empty compared to Four Peaks, but I don't think that's indicative of the quality at all.
In terms of the beers, there's a good variety from in house brews, local AZ, and across the country. The Orange Blossom pint was really nice, and my friends and I can vouch for their Hef and the Blackberry Sour from out of state.
Whether it's the brews or the hard stuff, what I really appreciated was how real the guys behind the bar were. They weren't afraid to tell you if something was absolutely awful - we mutually agreed to rename one of the whiskeys "Gasoline" for good reason.
This place has a good vibe. From what I saw from the other customers the food looked bomb as well. For somewhere that started as my number 2 stop it definitely became my number 1 for the night. Looking forward to coming again soon!