I fully believe that speaker, or interconnects, are system dependent. Out of what I've heard I like Siltech the best and they seem to be fairly good with several brands. The series I have isn't in your specific range but I think they do offer some in that range. I also have had good luck with Transparent who offers speaker connects in that range. The most apparent difference I noticed when putting the Transparent in is a much tighter and better defined bass response, as well as overall better SQ.