best solution for PoE testers? Or PoE+Cable tester?

I am looking to purchase a PoE cable tester. What models is everybody using? I would like to get a solid device for testing various ranges of power over ethernet as i have some devices that operate on custom voltages.

I have seen some solutions from byte brothers, one of these being a PoE & cable tester.

What is the best overall, all-in-one solution?

opinions please.