Easy to drive, outstandingly natural sound from 40-50 Hz up.....AN-E, O/96, others?


If my goal were to find natural-sounding, dynamic, and efficient speakers that can be driven with a somewhat lower-powered a (i.e., 50-watt SS) amplifier, and that work well with a variety of music, would I be looking at AN-Es, O/96s, or which others?
I am not particularly interested in using a 10-20 watt SET, but being able to use something lower-powered than the 300-watt amplifiers required for my 85dB speakers would open up a lot of other amplifier options and simplify things for me.  I have two fairly high-quality powered subs so the goal would be to fill my (moderately large) room from 40-50 Hz and up and let the subs handle the lower registers.
Any thoughts on the two speakers listed, or recommendations for others?
mitch2
Exlibris,
I have the Eufrodite Ellipses with the newer woofers. In my room and set up the speakers are very cohesive and speak with one voice. They do like breathing room.
 
Show conditions aren’t the best place to hear them. At Jeff’s (Highwater Sound) place they sound much better.

Good Luck with your search!

Joe
Contrast Audio Model One; 16 ohms, 93 dB.
Audiokinesis- Duke has always made great speakers that are easy to drive.
Many 'full range' speakers like Lowther and Voxitiv can make 50Hz. Voxitive had a very nice sounding room at RMAF; their drivers are around 100dB.




I have Duke's "Swarm" subwoofer system but have never heard his regular speakers.

The full range speaker at the top of my list is the Cube Audio Nenuphar.  It has a 10" driver that is made in-house.  I've also heard good things about the full range drivers from AER.  
My exposure to full range speakers is, however, very limited. 
I've demoed a number of horn speakers but have never truly enjoyed any that I have heard. 
I heard the Cube Audio Nenuphar at the CAF and it sounded really good.
Bass went surprisingly deep for a single driver speaker and the midrange was very open and had no shout.