For historical purposes, I'll just end this by noting that I've decided to go with the Luxman 505u.
It's the Swiss Army knife of integrateds: power meters, balance and tone controls, mono switch, built in MM or MC phono, RCA and balanced inputs, good power, - most importantly, it drives the Harbeths beautifully and never puts a foot wrong on the sonic front.
I will admit that it doesn't have the golden glow of SET amps, nor the pile-driving bass of a Krell, but it plays beautiful music nonetheless.