For the EOD helm, you could try some sunglasses lenses. I saw that the other day, around here somewhere, but I don't remember who did it. It turned out perfect, and shades are pretty in-expensive and shouldn't require much modification(just take the lenses out of the frames) to make them work.
Also, the difference between smoothed and un-smoothed on your kinda surprises me, I'm new and haven't gotten to that stage yet, and not a lot of people who's threads I've seen have shown that. Its quite a difference!