Martin Logan Monoliths
Apogee Scintillas (I own one of the few power amps capable of driving those 1 ohm amp killers, but have never been able to find a pair for sale)
Vandersteen 4A (I also own a pair of those - only a few hundred made in between his other higher production speakers. Pic is my pair, triwired and biamped. (the amps are Classe DR3 VHC run in mono mode -they made only 133 of them - I own 3 of them - so not exactly thick on the ground). Bass is run by PSE V monos) If you ever find a pair of these speakers, buy them!.