Integrated amp for efficient speakers

I am looking for an Integrated amp in the $1000 range to push efficient speakers (8 ohm). Considering YBA, Cayin, Sim Audio, Rogue Tempest, etc... Cayin seems to garner good reviews and satisfaction but the downside is hard to bias. I don't like a cool thin sounding amp but like neutral to warm with no listener fatigue. Right now I have Tyler Acoustic System 2's but will be selling those and going with a floor standing monitor like Ty's D3's with a sub or a high efficient floor standing full range (8 ohm). I have gravitated toward tubes the last couple of years for obvious reasons but not ruling out solid state integrated amps.
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The 50T is the warmest sounding. The 70T is a bit more open (more spacious stage), transparent and dynamic.

I owned the 88AT with Audio Physics Yara and I loved it. Beware of grey market models though.
I'm not familiar with the 60T. It looks to be a 50T with a different tube compliment.
You can e-mail me directly if you have any other questions.