I would add Rogue Audio to your list. I have a Krell Ksa-250 and Rogue Audio tube amps.
The Ksa-250 and another Krell amp (Kav-500) were part of my multichannel system. When I broke that system up I sold off the Kav-500 and bought the Rogue amps.
I like the Rogue monos a lot...I would expect the Rogue integrated amps have the same sound signature...ie, solid state like in bass and hi freq's...tube bloom in midrange freq's.
Really, you need to match your amp with your speakers...plus, factor in the type of sound your going after for "That" system. Solid state amps sound different...tube amps even more so.
Dave