Of all the gay bars in the city, 5801 (or "58" as the locals call it) is by far the best. I've visited many times and never had a bad time or a bad drink.
The thing I love most about this place is the space. It's actually pretty big! The first floor is the smoker's bar as smoking is allowed. They have bar seating as well as high tables and a jukebox with any song you could imagine. I tend to stay away from this area because of the smoke. The second floor (non-smoking) consists of a bigger bar, booths and dart boards. Their latest addition is the spacious outdoor patio which is accessible from the second floor. Half of it is outside and the other half is indoors with the bar in the middle that separates the two.
Drinks are always very good! I never had a bad one. My favorite is their Long Island which is on special on Thursday I believe. Bartenders are usually very friendly as well.
If you're hungry, they have a kitchen that's open till around 11. I've only had their nachos, but they were very good and loaded to the brim. You won't find a steak and potato dinner, but a classier type of bar food.
Weekends are usually busy here and they do have decent specials throughout the week to get people in the door. They also hold bingo games once a week hosted by a drag queen. Crowd is usually mixed as well.