What are the best night clubs to go to in downtown chicago?

We are looking for something to do over the weekend. Day or night it doesn’t have to just be night clubs. We are going in April so if you have any ideas of what we can do while we are there that would be great. (we like hip hop clubs)

720 is good, 4 different floors with different music. Tini Martini (its kind of border line northside/downtown)