I am convinced you are utterly correct about the superior SQ of pure Class A. I will never leave it.
My Krells are KRS 200s, the last reference before Krell were shamed into abandoning Class A because of the power consumption. Mine draw more than 1kW per side continuous. They are one of the very rare early pairs that were converted to deliver 400w/side and mainly suppied to Krell agents (where I got mine). They are getting on for 40 years old now and I had them entirely refurbished (mainly caps) in 2011. I also have a KSA 50 in another system - Krell's first product and glorious it is too. That one continues to emit signal (albeit increasingly distorted) for nearly 10 seconds after it is powered down. That's what I call a power supply.
IMHO you could do a lot worse than go back to Krell monoblocks. I see a pair like mine, recapped, for $12,500 today. In view of Class B amps in $six figures, this must be the bargain of the last two centuries. I paid £6,500 in 1992. List in the mid-80s was about £26,000 I seem to recall. They are often cheaper than £12,500 but I paid £3,600 to refurb mine.