If you value simple builds, DEC brand relays pair with basic controllers and switches.
3 Pcs 00432101 5-Pin 12V 40A Multi-Purpose Relay Heavy Duty Relay – Replaces 430
What stands out about this unbranded relay is that the pin layout is printed right on the top for quick reference.
A nice touch is the sturdy casing on this unbranded relay, which feels solid without any rattles inside.