Every tradesman I know has at least a modern mag light. As an electrican I always had at least something 18650 in my pocket and one a bit bigger in the van. For me it started out a sk98, then a s2+ with a c8 in the van. I did end up having to use my volunteer fire dept issued streamlight on one job because everything had to be rated explosion proof (bio fuel plant).
Not sure who ya’ll dealing with and tools. All my stuff is dewalt, klein, fluke, and old US made craftsman (back when they were good) hand tools. Sure the first years started off with cheap crap but you upgrade as you need and can afford it. Most the time you end up with at least 2 sets of good hand tools for backup. Playing with angry pixies stuff like pliers and screwdrivers get arced here and there. When doing it for a living I was taught (and taught) to get the best you can afford. Now that I’m a farmer sure if I only need a 38mm wrench once a year I might cheap out. If I use it more than twice a year I will get something better.
BTW,You want to see some real pricey tools look up anything rated explosion proof. That stuff can make a snap on truck look like harbor freight.