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

Kalili...I tried them on stands as that seemed like a good idea, but they sound better on the floor with their original their little tilt back stands. I now have them 3 feet from the front wall pointed straight out with no tow-in, about 6 feet apart (measured from the center of the speakers), and 9 feet from my fat head. Great "holographic" or "realistic" or "psychedelic" or something sound, as it's like the musicians are right there in my listening space attempting eye contact and mumbling things about me...hey...they're watching my every move...gotta get out...

@jond 
Your questions raise some good points and even though the thought of simplifying my system is attractive, the simplest route is probably to stick with the speakers and amps that I already own.  I do have a 50-watt amp in mind but for the power I need to drive my current speakers, it just isn't in the cards.

There are some very interesting speaker choices provided in this thread so I expect others will benefit from the responses here.  I wish I had posted this 20 years ago when I started down this audio road.  Using more efficient speakers would have opened up a much larger variety of amplification choices, virtually all of which would have been less expensive than the amps I need to drive my inefficient speakers.

I am curious about any downsides of some of the efficient speakers mentioned here, such as the Klipsch Heresys or AN-Es, like midrange colorations or other sonic aberrations.  I have a friend who has been using the Heresys for years and likes them.

Thanks wolf.

I have AN-Es right now but am looking for an alternative. 
The ones I'd like to demo are:
Charney Concerto
Zu (not sure which model)
Cube Audio Nenuphar
Pure Audio Project Trio15

I'm a little hesitant about going for anything with down-firing bass woofers because I live in a condo.  If this wasn't a concern I'd be interested in:

hORNS Universum III
Tune Audio Anima
Odeon No.33