If you are anywhere near Wrigleyville in the city, go to Quads Gym.
It has been there forever, 3 stories, with every piece of equipment you could want and then some. 4 diff racks for dumbells with plenty of lb. so there is not a cluster in front of the dumbells. Supplements, juice bar, the owner is very cool and keeps the gym up
Probably one of the best gyms I have ever been in, it was also rated top 10 by Muscle and Fitness a few years back. I don't even live in Chicago either saying this