high-efficiency loudspeakers

I am a fan of many high-efficiency systems, but, most are systems built from high efficiency drivers and custom cabinets and crossovers and not complete packages.  I like some vintage drivers and a few modern drivers that are either straight out replicas of old drivers or are modern updates of old drivers; these however, are crazy expensive (e.g., G.I.P, Cogent, Goto).  

Of the modern, complete systems, my favorite are the Charney Audio systems utilizing full range drivers in back-loaded horn configurations.  Until I heard the Charneys, I did not think that a single driver system could really be a complete speaker capable of playing all sorts of music very well.

For a fairly low-cost high efficiency system (albeit with a built-in amplifier for its bass driver), I like the Rethm Bhaava.  At a substantially higher price level, I like the Avantgarde systems that also use powered bass drivers.

For not so high efficiency speakers, I like the entire line of Audio Note speakers, The 093 family of Devores, Trenner and Friedl speakers, Classic Audio field coil driver speakers and Horning.

I know they aren't the "best", but I really enjoy my Legacy Audio Focus 20/20 speakers. I've heard better speakers, but purchasing a used set of these was the best price / performance compromise for me. I also have a pair of Klipsch klf-30 speakers and a pair of Klipsch heresy I. I've gone through and replaced the crossovers and all of the drivers in the heresy and the crossovers mids and tweets in the klf-30s with parts from Bob Crites.  They are both very listenable speakers.

By the way, tseamless isn't an actual word.