GR Research, a DIY company out of Texas is suppose to offer an incredible speaker called the Alpha LS. Apparently they only use top-of-the-line drivers and cross-overs in their speakers. You can either build the Alpha yourself, or have GR do it for you. Another Audiogon poster thinks the Alpha LS outperforms Pipedreams. I can't comment on their sound quality because I haven't heard them, perhaps others on this board can elaborate on GR Research.
http://www.gr-research.com/AlphaLS/Alpha.htm
http://www.gr-research.com/AlphaLS/Alpha.htm