After having like 20 or so torches specifically bought from head shops and vape stores all die in less than a year, I said "fuck it" and bought a kitchen torch from a commercial kitchen supply store in the area. I've had it for 6 years now with no issues. Plus I can actually make the cool caramel crust on a creme brulee now when I'm not using it for dabs.
You could also go with an acetylene torch from a hardware store. Those are sturdy, and the propane tanks last fuckin' forever if you're just using it for smoking. Though, they aren't easily portable.