Inteligate still working fine.
DI is fine for live use.
The headphone amps (rack ones) seem to out last the Samson ones.
The Truths I didn't personally like as I found issues on a EDM song that I was working with round a friends. Got the song home and things were suddenly there that weren't meant to. Also they pick up interference from taxi radio. Had an Allen and Heath mixer that did that as well. However I know a few people that get good results with them. So I have learned that its more about the user than the equipment.
Will get the cable tester now.
Have the measuring mic. Might now try it on various sources for some laughs.
Wish that proverb was still available. My MPX 500 and 550 have both failed me.