Reasonably sensitive speakers for tube amps, max $2k/pair, new or used


While this topic has been covered before, I'm interested in both recent experiences with new products or anyone who just would like to chime in.

I have a couple friends interested in tube amps, lower wattage -- 40 wpc or below. Before they pull the trigger there, they need to find the best higher sensitivity speakers they can, hopefully at $2k or below, new or used.

QUESTION: What high sensitivity speakers would you recommend to them, new or used? What did you try and NOT like?
Characterizations of their sound, experience with a trial period, the company, etc. appreciated.

I'll pass the best answers and links along to them.
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I recently watched a vid on Klipsch La Scalas. 
You find a beat up used pair for 1500 bucks and upgrade the crossover and drivers for 500-1000 bucks and have a pair that supposedly sound comparable to the modern ones. 
I might try it myself sometime. Those are in the 100db/w range I think. That would be great with the low tube watts. 
Just for reference, Ohm speakers can be returned during trial period for shipping cost only. Company has been around for 50 years now and is not “desperate”. Also a sterling reputation for customer service. Very backlogged as well these days though I hear. 
Love the looks of the Abbeys.  Would buy them at their price just for that. 
Obviously there are big differences if we are talking new or used. Also big differences w.r.t. how much bass extension you want.

I'll second the Fritz recommendation, for a standmount, new or used, with good bass extension.

You can get a used pair of Audio Note AN-J for about 2.5K.

You can get a used pair of Devore O/93 for about 5.5K.