Hidden Gems in Pre-Owned Solid State Power Amplifiers?


Browse the listings for power amplifiers (e.g. under $5K) and you notice a myriad of Classe, Parasound, Bryston, older McIntosh and Mark Levinson and lots of Pass Labs.
So many in fact that you wonder why.
What are the true audiophile gems in the pre-owned solid state market? Thanks in advance.
avanti1960
If you are lucky you may find a Benchmark AHB2 for a few hundred dollars off the MRSP of $3K. They tend not to show up too often. Could be that not many were sold or people who bought them tend not to sell them.

Classe, Parasound, Bryston, older McIntosh and Mark Levinson and lots of Pass Labs.
I'd rather have the AHB2. 
The Killer B’s, Bedini, and BEL. Difficult to find them now performing to spec making honey nowadays. Most of them just like to buzzzz now.
The NAD Silverline series , Gryphon amp in a NAD chassis . Under $1000 on the used market 
Belles and McCormack with higher-level mods — beware the older models input boards are beginning to fail and need to be replaced.  I know this because I have one that needs a new board, and it’s an expensive repair. 
avanti1960
What are the true audiophile gems in the pre-owned solid state market?
Audio Research D-200, D-300.