I believe I mentioned this long time ago, that Emotiva's old XPA series power supplies were not that big relative to the weights of the amps, i.e. the VA to lbs ratio weren't great. That's one example I could use to show you can't just go by weight. Onkyo/Integra is puzzling me now with their heavy AVRs fitted with digital amps.
That Nile amp's workmanship does not impress me, though it makes me happy because now I know I actually did better than them.
That's another advantage of the mass produced brand names (D&M again, Onkyo, Yamaha, Sony,ATI, Emotiva etc etc...) have, they can afford to use the automated assembly line approach.