Best DJ Lighting, PLEASE HELP!?

I need exceptional lighting, but i want it cheap too! Most area's I Dj right now are about 50 by 70 feet, somewhere in that range, please help and let me know of lighting that will make good affects in a room that big for cheap. Maybe idea's to make a "dancefloor" atmosphere in a 20by20 area or something along that line? I don't know, but please leave some links of lighting, and/or some ideas, thanks for any ideas!