I just went through this with my buddy that had a Jackson helmet and the battery's went bad and were welded in. I have a Miller and it works great, I have had it for 10 years with no problems. It does have a On button that you have to push, that is the only thing I don't like.
You're probably used to it though, so it's second nature. My Miller hoods "time out" too, but I don't mind. It's a reflex now. I know to tap the screen before I pull an arc.
