I keep going down in watts. I do have high-efficiency Klipsch Cornwalls.
My amp voyage has been....
NAD M23 200 wpc
to
Threshold CAS1 75 wpc
to
Manley Stringray switchable between 20 wpc (triode) or 40 wpc (ultra-linear)
All have sounded great, but each has been a step up in quality; in my opinion.
I love the sound of the Manley in ultra-linear mode.