I have a pair of Apollon monoblocks made with the PuriFi 1ET400A modules. I really like them, enough that I sold a $7000 amp because I prefer the Apollons for clarity, soundstage, low noise, and general musicality. I have listened to amps in the $10,000 range, and to me, these monoblocks are in that league sonically. However, they do lack the 3/4" thick machined front panel and backbreaking weight of some competitors. And they don't heat the room.
Now, everyone’s tastes are different, so some will not agree. (And some here judge products by the technology they contain, not the sound.)
There is one recommendation for you. Good luck!