I've been using one of these units for about 2 yrs now. Its one of those things that I wish I had a long time ago. I weld in a Tissue Mill and we do a lot of SS so the less of that stuff I can breath in the better. Once you get used to the extra gear that comes with this setup its not so noticeable. The battery lasts really well. The fabric used to seal the air in around the helmet keeps sparks and slag off your ears, neck, etc.(This is a huge bonus!) Price was less than the other brand I looked at.The only things that could be improved are air flow, more would be better. Also the fabric sleeve that protects the hose is a bit to short and leaves the hose exposed. I've taped it up but it still pulls back. This thing is hands down one of the best tools a welder can have, your lungs will thank you.