I see there are high dollar Sockets available. My buddy used a "commmercial" grade Socket. An electrician at his work said that they are similar to "hospital " grade sockets for less money. He said the biggest advantage that both have over inexpensive household sockets is the clamping force applied to the spades. He ran 10 gauge wire with a 30 amp breaker.
Question .... Can any gain be had with better quality breakers?? Seems that if one end is can be better (socket) then the other could also.
BTW Im not an electrician so I wont comment on wire runs grounds ect.. best to talked to a pro!