Tabu might not be a bad idea. I walked by a couple times over MDW and the beats were pumping and there was always a long line. Might be worth a shot for a lounge. I'm going to check it out next time. The roof top terrace at Caesars is pretty cool. Might want to get a table though. It was so packed I could barlely move without bumping into people. Then again it was MDW. Jet is cool but the house music room was kinda small. Still worth checking out imo. Empire, Def my fav spot for afterhours. Plenty of room and a cool outdoor roof deck with a dj. Checked out Mix, the view alone is worth it. Although they were playing all hip hop when I was there. If all else fails...get really drunk and you wont remember the music anyway!