I just took a chance on a $50 (down from $75) auto darkening welding helmet. Worked great for a while until suddenly I'm looking at the arc in full daylight! That's nice... nothing like going blind trying to dave a couple bucks. Took it back for a refund and bought a Hobart at TS.
But I have to admit that this is the only "meaningful" tool I've bought there that has failed.
