first, i will start with vision. vision is a very large club by just about any standards. friday night is hip-hop night and saturday night is basic techno/house music with a sprinkling of hip-hop, depending on the mood of the dj. if you get there after say 11:15 or so you'll probably be in line for some time unless you know someone. save yourself the money it costs to get in and go to http://visionatlanta.com and print off a free entry coupon. you must enter the back door for that. good music, good looking people but no red bull. if you are a good looking woman, it is no problem to get into vip, if you are a man like me, you had better know someone.
1150:
same people that run vision on saturday night run 1150 on friday night. same crowd as vision, better music. more deep house. big named djs play there (e.g. oaky, sasha, baby ann, icey). no idea how much it costs or what time to get there. never had to pay or wait but i'd say the same rules apply as for vision.
cosmopolitan/lava:
smaller clubs (two for the price of one) but just as good if not better. not the same supermodel crowd though as vision and 1150. never had to pay or wait so i can't tell you about that.
crescent room:
soon to reopen under new ownership so i can't tell you yet.
twisted taco:
more of a bar than a club although they do have a dj. i have never had a bad time there. something about the place makes it a great place to hang out. no cover, no dresscode but it gets *packed*
front page news:
outside area for sitting. some type of band typically plays. more of just a bar. quite popular but i like twisted taco much better.vision, 1150: no jeans, no sneakers or as they say 'dress to impress'
cosmo/lava: jeans are allowed but i don't think sneakers are.
twisted taco & front page news: anything.

