Switching to solid state amp?

For about 17 years I was basically using tube Manley Stingray. They drive very well Thiel CS3.6 speakers with a  natural and open overall performance. Since a few years ago, I have two more amps, which are solid state, but both give tube-like soft sound. A moderate Arcam A90, a good deal  for the price, and Mcintosh MA5200 with Thiel CS6 speakers. So far, I am quite satisfied with Mcintosh  sound. It is notably more clean than that of Stingray, with slightly less intensive but good natural base, the soundstage is I think also better (it sounds perhaps less "aggressive" than Audio Research tube amps).

I would not accept such point of view, say 5 year ago though...  

A couple of thoughts:
SS amps have some realistic advantages. 
None are created equally and specifications are really no indicator of sound quality or sound characteristics. Much of the time the Loudspeakers that are mated with a particular amplifier are the most important consideration. Ask yourself why is that happening? 
Begin with a thorough examination of your speakers specifications with as much information that you can garner.
Look for a SS amplifier that is less complex than more. Simple well executed single ended designs are generally advantageous and less costly.
Sometimes a loudspeaker will sound so much better with one particular amplifier than anything else, magic.
I would finally recommend that you consider contacting your loudspeaker manufacturer and inquire about the amplifier(s) that they use to great effect.
Good luck!

Has anyone paired Quicksilver preamp with a solid state amp, somewhere in the $2k range? I'm curious about tubes, but am suspecting the the crisp control from SS will be important.