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
@mrdecibel 
A good set of horns will excite and delight.
How about Klipschorns?  How good are they? Can they be set up or modified (if necessary) to avoid thinness, honkyness, or other horn-related aberrations?  Can I get the exciting dynamics and a rich tonality from an easy to drive horn speaker?
Absolutely ! However, K horns need corners. The Lascala does not, and benefits from a pair of subs from 50 hz down. I have been a Klipsch Heritage fanatic for 50 years, and when I get done with a pair, none of the nasties are present. Just beautiful, realistic sounding, fun and involving performances, right in your listening space. 
@mrdecibel 
I could do corners, or not, so either Klipschorn or LaScala are possible, and the room is big enough.  What do you mean by;
"when I get done with a pair, none of the nasties are present"
Are you talking about making modifications you have learned over the years, or do you have a business to modify/improve Klipsch Heritage speakers?  Pardon please if I have missed something earlier.

Big Tannoy - the legacy arden do 35hz - 30kHz and an easy 93db driving speaker.
But O93 should be cheaper and easier to pick up in the US (tannoys in UK relatively cheaper $7000 new for the Ardens) and I would have prob been keen on them and Audionote AN’s as alternative.
Think all 3 are ones to lose yourself in music with.