When I built my house 20 years ago ...
I used the push in terminals on fairly cheap recepts. 20 amp circuits 12g wire.
During remodeling/repainting this fall I took out all of the recepts and replaced them with spec grade recepts and used the preasure plate fasteners.
The old wires and old recepts looked to be in new condition. No arcing and not heat discolleration.
For the past 5 years each circuit using push in terminals had 2 computers with monitors running full time and a heavily used laser printer. There were other small devices on each circuit.
But heck the clamp plates are easier to install and remove.
