System Audio's SA2k is a pretty impressive performer. It uses customized scan-speak drivers somewhat similar to those used by Wilsons, for example (same driver "family"). Well worth a try in their size/price/performance range.
details at:
http://www.system-audio.com/showpage.asp?siteid=2&id=312
details at:
http://www.system-audio.com/showpage.asp?siteid=2&id=312