For me its been running shoes for work, well all the time. I have been a on my feet busting ass since 1978 and my feet were constantly killing me and otherwise making my life miserable. I tried every kind of shoe/insert/boot imaginable. I tried every, "you gotta try these"shoes, still miserable.
On a whim I bought running shoes and tried them out and in short order it was like the heavens opened. My entire energy level towards life changed, my feet are never sore or tired any more.
A couple employers were not 100% thrilled but they got over it, I was able to find some black Nikes with Rosso Corsa red logo on them.

But thats me and my story may not be for every one, but I no longer complain about my feet anymore.

YMMV and all.

Those muscle guns are the $hit however, especially when you shoulders are so wadded up from stress that you want to dot someones eye, it brings you down to just wanting to trip them a laugh when they fall.