Looking for nice banquets in chicago..?

I have to throw a holiday party and im not exactly sure what a good place to have it is. Last year our holiday party was at Maggiano's and everyone realllly loved it. We need a banquet room for about 100 people, where there is a cash bar, a dance floor and where a dj is welcome. We dont want to spend over $50 a person. Im looking for something, not very very expensive, but a decent restaurant maybe similar in style to maggianos. Please let me know if you have ANY ideas of places in chicago, and the suburbs of chicago. Thank you!