For a basic amp, hard to beat a Schiit Vidar without big bucks. Anthem and Outlaw also good. Toss on a Schiit or Topping preamp and you pretty much beat most integrated and have enough left over for killer DAC or phone stage.
In the integrated scene, really tough competition: Atoll, Hegel, Arcam, Marantz, MusicFidelity, Cambridge, IOTA, Audiolab, Rega, Rotel. Simm, and others. Even the traditional old mid-fi like Yamaha and Denon are tipping their toes back into sound vs features. Most are excellent so differences may be in features. Do you want their DAC? Need a phono board? How important are headphones? Only listening in stores while speaker shopping, I thought the Atoll on the dry side, MusicFidelity a bit fuzzy. Hegel more musical ( a bit more distortion). Audiolab had the features I was looking for, Cambridge and Rotel used to be short on dynamics, but that may have improved. None of these perceptions were careful in my system at home, Just quick shots.
I am trying to overcome my bias against class D as they have improved immensely. Not sold yet but I want to hear something like a Buckeye or March. I no longer "hate" the CiFi spec chasing sound from the likes of Topping or FOSI, but it does not serve my taste yet. You might listen to a better designed class D before staying on the A/B camp.