In my opinion, there are so many amp choices out there that it's not really in your own interests to limit yourself to just the three listed.

Given that choice though ... I haven't heard a current Accuphase, but I have owned a Krell 400xi - the sound is a bit on the smooth, warm and gently coloured (rose tinted?) side of things. If you want to capture the full excitement and pizzaz of music then you need to look elsewhere, imho. But it has good power and control, and decent rez, and won't get fatiguing for long listening sessions.

I have owned a vintage Accuphase E202 ... very nicely musical and a pleasure to listen to. A bit 'safe' sounding, but none the worse for that, really!

Luxman has been mentioned by some folks, above. I've not heard a current Luxman amp at home, but in other systems I have heard they are a bit clinical and with a bit of an etched top-end which doesn't suit some folks. Almost the opposite to the Krell 400xi sound, really.

If it were me, I'd certainly add a valve amp or two to my shopping list. You may be pleasantly surprised at the bass control you can get, and often enough the mids and top have a realistic 'palpability' that solid state does not often manage.

IMO. YMMV.