You can see the pin style relay right away, and it gives the unit a classic, familiar look.
Aromat HA1-DC5V SPDT Relays, 5VDC 3A 1 Form C, Lot of 5, P/N AW221998, NEW
A nice touch is the PCB power relay's compact build, which leaves room for other components on the board.
A nice touch is the PCB power relay's consistent behavior, even when line voltage dips slightly.