I personally thought for a long time aftermarket receptacles were a waste. When I built my sound room, I used hospital grade hubbels.
Friend told me about the Furutech GTX. I read the factory specs, pure copper, that made sense, and a industry first. Tried one. 500hrs latter replaced the other four. Just one was far from subtle. IMHO all connectors, wires, fuses,outlets, metal type and purity is a really big deal.