Cayin, Primaluna and LM do not bother me.
However, I do avoid food/pet food, cookware/dishware, vitamins, personal care products, clothing and pretty much anything made of plastic/including car parts from China.
I listened to an "updated" Cayin PP integrated amplifier a long time ago and thought it was pretty good.
Other than upgraded caps it had a triode switch and a pot/knob that somehow seemed to adjust the damping factor.
Forget who did the mods, but it wasn't Upscale.
DeKay