eleven50 is the only club that targets EDM fans(on Saturday, Friday is cheesefest for Q100 night). Bazaar is a cool spot but very low key. If you are looking for a lounge, Halo is a good choice, but very mixed crowd so know that going in. Compound has a nice outside but the music area sucks(as does the music on most nights) There are no legal 24hr clubs. There are some under the radar events that take place each week. Most of them suck....however, check out www.sweetpillow.com for the dates you are in the town. Brett Long is probably the most talented dj in Atlanta and his events are listed here. Hope this helps.