High Efficiency Speakers Your top 3 or more


Not taking cost or musical preferences into account what are the top 3 high efficiency speakers you've ever heard, overall?
mmike84
BTW, there is a good chance that if you are supplementing the low end of a SET based system with a high end powered subwoofer, that sub is using a Class D amplifier, not SET or even tubes in general.
Is there an generally understood start line for the handle of high efficiency in db/w?

I am seeing some speaker systems under "high sensitivity" that are not that sensitive to my understanding of it Say 93/94 db/watt. The highest I have ever seen is 118db/watt.
Post removed 
Has anyone mentioned Zu speakers yet? The ones I have heard have sounded good and I believe around 101 db/watt. The Essence was cheap and sounded good on Atamasphere amps.

As Mapman alluded to these can play modern music without strain too amp permitting.