I don't like what is happening with my eyesight after welding. It is like I looked at the sun but lasts longer. My helmet is a Miller Titanium 9400i. Forgetting about all the complaints about it being heavy etc. I own it, it should be the best for protective vision. But, if not please let me know and I will sell it and buy the best.
I use the cheapest Jackson helmet and the cheapest glass lens in shades 8 to 15.
My helmets cost about$45 at airgas and the lenses cost $1.75 each and last a long long time.
I do have some glass gold lenses that work well on stainless mig, I don't use them unless I am having difficulty seeing, they sometimes work better.
For tacking I use an auto helmet insert called Save Phace, it costs about $80 at my supplier and has a 3 year warranty, no replaceable batteries. I use the small veiwing area at work 2x4 1/4.
I have never had a auto helmet that has better view than plain cheap green glass. I have bought a lot of good expensive auto helmets, never really like to weld with them, they are great to learn with and for tacking and assembly work.
Most manual helmets come with plastic shades, they are worthless.
The Jackson helmets have very nice headgear and my neck and ears dont get burned.
I used the hobart auto helmets for years for tacking, neck and ears got burnt if I welded with them. Too short and not wide enough.