Please Recommend Highly Efficient Floor Standing Non-Horn Speaker Suggestions

I’ve had the Tekton Double Impacts, the Ascend Acoustic Towers with Raal like you’re looking at and currently Legacy Focus SE’s. For what you’re wanting I’d go with the Ascends. The only reason I upped the ante to the Focus’s was SPL and headroom. The Ascends are a fine product and Dave and Dina are great people to deal with.

CUBE AUDIO

+1 Zu. I have has Zu Def 4s for many years. I drive them with an 300b SET amp.

I've not heard the Tektons, but am aware they get a lot of (+ & -) talk around here.  So, when I saw a Stereophile review of the DI recently, I skimmed through it.  They did get a good review and I believe made the Recommended Speakers list. 

However, on the test bench their sensitivity was estimated at 87.5db, which is quite a bit lower than claimed.  Perhaps this is one of the reasons there are such varying opinions on these speakers.  If you're buying them because you wish to use a low power amp and need "highly efficient" speakers, you may well be disappointed by what appear to be speakers of average sensitivity.

I have Living-Voice OBX-RW speakers (94db 6-ohm nominal) and have used them with an 18WPC SET amp and First Watt SIT-2 8WPC solid-state amp very effectively ! They sound terrific and play plenty loudly in my modest listening-room.  I also had a Pass-Labs 30.8 stereo amp (30WPC) that would play these speakers very loudly seldom moving the VU-meter.  Highly recommended if you're not wanting to buy horn-speakers...