You will find that the NVX label is easy to see, which helps when you are working in dim lighting.
Ford International 20A Fuse Circuit Breaker 0578992C2 30-12V
You will find that this unit carries the AMP brand, which many electricians recognize right away.
the model MIC-06-117 is easy to identify during maintenance, which is a nice touch.
You will notice the Deltrol brand right away, making it easy to recognize at a glance.
You will find that the unbranded/general look helps when you're building kits for teaching or hobby use.
A nice touch is the Dold brand on the relay body, which reflects steady quality without making a big deal about it.