The HF helmets are NOT as good as the miller Hobart ect.
One reason has been said before. the hoods and straps are FAR better quality.
Take it from someone who has burned their eyes pretty badly welding.
The HF helmet is great for the DIY weekend tinkerer.....However if your job is welding all day everyday I would invest in a better helmet.
But even then I doubt that the .0025 sec difference each time you strike the ark or start the bead is going to do your eyes any harm....no more than being outside on a bright snowy day!
I trust oldred and the others on this one.....and like I said before I have a slezebay helmet and LOVE it. Best 40 bucks I'v spent in a long time.