Integrated amp for Q Acoustics Concept 500?

I will be getting the Concept 500s next week. I listen to Tidal Premium through Optical Rendu into a Denafrips Pontus. I have a 30/60 (A/AB) watt per channel
integrated tube amplifier but I would like to get an integrated SS amplifier.

I have been been considering the Coda CSIB, the Krell K300i, and the Gryphon Diablo120. I have not found the Coda or Gryphon available used and I’m holding off on the Krell to see if I might find something I like better....I’m not crazy about the new design and it not being either class A or Class AB.

I would consider Luxman, McIntosh, Levinson, and Pass but I’m not sure which models would work well with the Concept 500s and meet my criteria:

1. used around $5K,

2. works well with the Concept 500,

3. very well regarded and will be easy to sell should I decide to do so.

I will be willing to go somewhat higher ($6-7K) if I can’t find anything available at the $5K mark.