Check out the Lincoln Viking helmets. Huge viewing glass. Very comfortable I have one that is a few years old and it has been perfect.
I love my Optrel. I upgraded from my Vega View to the E684. I had used a Miller Elite in the past but since I've gotten older, I need more light to see the weld pool so I don't kill it. The Miller blocked too much of the light coming through, not just a function of the shade settings. I was having issues when tigging stainless and not cooking the material. At the class I was taking, the fellow students and the substitute instructor had other brands to check out. The Lincoln wasn't any better from one student but the old Speedglass from the instructor was better. I found out about the Optrel unit in my Weld Use literature. I highly recommend them.I make a good part of my living welding.
Been using the higher end Optrels for last 20 years.
Have a 3M that's also good.
https://store.cyberweld.com/optrel-panoramaxx-welding-helmet-1010-201.html
My last Optrel is pretty well used up, just ordered one linked above.
Dave