i'd like to see scientific evidence on this.
because sheer money spent does not automatically equate quality.
for all you know the 200-400$ helmets may be made int he same plants with the 35$ helmets, and the seller just makes that much more $.
are there UL tags on the 35$ helmets? any independent testing to see if they DO in fact block IR and UV statically as said. if they do.. theen you are just dealing with shade speed.. and that can be gauged with eyes...
just sayin....
This is the same argument a mechanic with a bunch of cheap chineese tools would make to the other mechanic who had more expensive snap on, matco, mac, cornwell, , craftsman, etc tools. Your chineese wrench might be the same size but there are differences between it and the others mentioned just like there is a difference is a $35 no name auto shade and a $350 name brand auto shade helmet. And no I don't' have any scientific proof.
That is a good question about the testing of auto shade helmets and if there are indeed laboratories that confirm which helmets protect your eyes better but you will need someone smarter than me as I don't know.
You are entitled to your opinion just like I am to mine. I don't trust my eyes on a $35 auto shade harbor freight type helmet. It's simply too much risk for too little reward IMO. Risking your only 2 eyes to try and save $100 is not a reasonable way of thinking IMO. There are much less risky ways to save $100 that dot' involve something as important as your eyes. If someone is truly on a budget a better choice is a simply fixed shade helmet.
Feel free to trust your eyes to your choice of helmet and tell us how good your experience was. I think we are all interested in what others use, why they chose it, and how well it has performed for them.
I've always been fascinated by the high end units like 3M and speedglas. I'm planning to upgrade to a miller titanium at some point in the near future. I have a miller pro hobby and have had good luck with it over the last 15+ years. I've replaced the auto dim unit once in that time so I average about 7-8 years out of one.
I would recommend it to anyone who does occasional welding jobs and wants a quality unit that will last many years. Consumables are pretty cheap and readily available as well.