When talking about manufacturers I decided it doesn't make a difference for me. If someone tries to sell me a special power/network cleaner or something like that, they are either dishonest or incompetent and deluded. Either way, I don't trust them to be honest and competent when selling me a normal amp.
Of course while there are companies I'll definitely avoid, most people in the business seem to operate in a grey area, making the usual claims about their new amp sounding so much better than everything before etc. but not everyone tries to sell me a psu with integrated oscillation overthruster.