A speaker that rarely gets much mention, but offers excellent performance, is the Sequerra MET 7.7. The speaker is designed and made by Richard Sequerra, probably best known for this high-end tuner some years ago. The speaker is now offered in both a standard model and a self-amplified model. I owned a pair of MET 7's for a number of years and sold them quite reluctantly. Here is the link to Sequerra's web site:
http://www.sequerra.com/electronics/data/index.htm
http://www.sequerra.com/electronics/data/index.htm