Duntech, both the Sovereigen and Princess models. If you have the space and appropriate amp, I believe these two offer some of the best performance per $ available. And while I also hold the various DAL speakers in high regard, I believe the Duntechs are even better, due to better cabinet design and driver choices. Unfortunately I think John Dunlavy designed his DAL speakers down to a price point. This resulted in a few compromises, more so than with the Duntechs.
I am not alone in this opinion. For the past few years John Marks has recommended looking for used Duntechs in his Stereophile column.