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

Well, I agree that 91dB is not that sensitive, however coupled with a flat 80hm speaker with a rather narrow phase angle makes for a pretty efficient speaker to my thinking.

What I failed to do was describe my listening environment. Basically a dedicated room treated to my liking that has the volume of a ~12x15' roo

Why 92dB?

You’re better off choosing a speaker by how it sounds in your room rather than any spec. 

IME, most speakers with over 90dB sensitivity have significant drawbacks in other areas, such as low maximum output or very truncated bass extension. 

The Fritz speakers are a pretty easy load for most amps and your room is fairly small. 

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.