What is the best solid state amplifier you have ever heard?

Thank your for all the ones responding. For the ones criticizing the thread, if you don't like the thread, ignore and move on to the next. Your time will be best spent looking at more sensible and valuable threads than this one.

I'm learning more and more about amps. 

Thank you. 

@erik_squires yes Arcam stuff has been good for as long as I can remember. Always marginalising more towards warmth than most others.

With first rate reliability and support too.

In a retail setting; BEL (Brown Electronics Labs) MK-V's.

@ptss what spectral amp did you hear?

The two best I have heard in no particular order are:
Nagra Classic
Linnenberg Liszt