A list of efficient speakers at ~$5K a pair.

GR Research is all you need

It's amazing that so many people, some of them supposedly audiophiles, don't grasp that speaker sensitivity is simply how loud they'll play with 1 watt of power. Also, 91-92 is considered the low end of high sensitivity. Look it up.

94dB, Living Voice start at about that price - an extremely engaging sound that makes me want to keep listening. No idea of the cost in the USA but that are well worth a try if you can. As ever, your taste, your equipment, your room.

Zu Audio Soul 6 used will fit.

Thanks to all who have responded so far. 

My thinking is that Sensitivity + Impedance + Phase angle = Efficiency.  My understanding of these factors are not complete.

The way I view this, sensitivity has much to do about how loud a speaker will play into a room of a given size.  I consider 92dB to be on the high end of the mid, or low end of the high range, for this spec. I should have stated 'at least 92db'.  Impedance and phase angle have much to do about how much power is required by an amplifier to drive a speaker to reach the desired loudness within said room. 

I am searching for speakers that would make a lesser demand on a power amplifier than that of my Fritz speakers, which I do consider an easy load.  

I will search out the Reference 3a mm de Capo and the Living Voice speakers. I seen mention of both on this forum, however have not heard either.