Well, there are quite a few excellent choices these days. Your three listed choices are vastly different in their approach to high(ish) efficiency, so it is hard to offer suggestions. The Conicidents are 97dB 3-way, the Royals are small 92dB 2-way monitors with minimal crossover, and the Cabasse line runs the gamut of everyhting.
I have 97dB Cain & Cain I-Bens that I think are fantstic, but it really depends on what you are looking for - fullrange single driver, compression horns, multi-way dynamic driver. So here's are wide range of options:
Audio Note's own speakers
Cain & Cain - Single or I-Bens
Edgarhorns
Silverline
Von Schweikert
Zu Speakers
Dali Speakers
Beuhorn
If none of those look interesting, let us know.
I have 97dB Cain & Cain I-Bens that I think are fantstic, but it really depends on what you are looking for - fullrange single driver, compression horns, multi-way dynamic driver. So here's are wide range of options:
Audio Note's own speakers
Cain & Cain - Single or I-Bens
Edgarhorns
Silverline
Von Schweikert
Zu Speakers
Dali Speakers
Beuhorn
If none of those look interesting, let us know.