plus for Cayin
I've heard, and owned several tube amps, receivers, and last year sold my McIntosh SS amp and preamp, to get back to tubes. Needed 16 ohm taps for my speakers, found and bought Cayin Tube Integrated, AT88.
Sound: it never occurs to me to think about anything else.
Features: I wish it had external 'safe' bias adjustment (later models do, but lack 16 ohm taps). Also missing: I prefer having a balance control, and a low volume listening loudness control. I get both from my Chase Remote Line Controller, RLC-1 which I would never be without.