Have you looked at Artcoustic before? The owner of the company Kim is also a DJ so he knows how dance music should sound. I work for a custom installation company and we deal with B&O, B&W, Triad, DefTech, Procella, Wisdom, Pro Audio etc. but I have to say the Artcoustic really handle dance music well. Have a look and if you want any more info let me know.
These would probably suit quite nicely http://www.artcoustic.com/Art_speaker_SL%20Series%20floor%20wall%20page.html
Cheers,
Nick