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

Bakoon Amp 13R.  A remarkable amp at 25 watts per side. This is where my amp search ends. 

Any feedback on heff rowland 1500 wpc integrated ?

D'Agostino Momentum M300's.  I was at Echo Audio in Portland and Kurt had these set up to demo and let me listen for a while.  Way out of my price range, but wow.

To me it’s my Krell FPB 600. Plenty of power when called for  , Big deep bass , Excellent detailed. Excellent in all areas for me. Everything I could want in a ss amp.This  amp is hard to beat. 

First Watt SIT-3