Can’t speak for LM or Willsenton, but Cayins are indeed excellent. In fact I wouldn’t hesitate to pit Cayin performance against the likes of VAC and Audio Research.
I had an original Cayin A88T that was built in 2006. I was at least its second owner—owned it for about 6 years between 2017 and 2023. It never gave me any issues other than a failed preamp tube, and is/was built like a tank.
The Rogue Cronus Dark is also around your price range and sounds excellent.