I am inclined to add the Cary Audio SI-300.2d to this list for consideration. Class A/B 300W RMS into 8 ohms, and 450W RMS into 4ohms, this unit is a beast. Modern/digital features galore, including wifi and Bluetooth, and an excellent remote. It does get hot, so needs room to breathe, but it will drive any speakers you throw at it. It is meant to be played loud, but I guess with highly-efficient speakers it would still sound okay at lower volumes.
My only gripe is no headphone jack :)
My only gripe is no headphone jack :)