Solid State Power Amps

NYAL (New York Audio Labs) Moscode 600 uses a tube input/driver stage connected to a Mosfet output stage. 300wpc. I have the Moscode 150 - 75wpc. Designed by George Kaye. Go to the Stereophile archives to read the review of the Moscode 300.

I would add D'Agostino to your list.  Friend of mine has Focal Grand Utopia driven by Dag and sounds wonderful.  

I will echo the suggestion for Bryston amps.  They come with a 20 year transferable warranty.  They are built to last.  Of course they perform well.  But at this price point,  you want something you can depend upon.

A close friend used to be the McIntosh repair tech at the House of Music in San Francisco.  He saw plenty of broken Mac gear and knew it wasn't worth the money people were spending.  They made their rep with the old classic tube gear and have been living off of that for the last 50 years.  They don't have a 20 year warranty...  Go with Bryston.

take a listen to Ayre stuff

+1 for Paass (especially 260.8) having owned them and are still mated with a ARC 5se. It has allowed me to get off the upgrade  cycle as they are about as good a pair as I would possibly want. Left Levinson and never looked back....

I do not think you will have any regrets with them