Here you go Brag.
I tried both these out today. I've never used the Power Miners Helmet before and it works very well (
Thanks aoffan23!) although the visor slopes inwards ever so slightly at the bottom. I had used the (Old American Football skullcap) helmet before and wasn't convinced at the time. However, when I tried them again here it worked very well, I must have had a loose visor or something the first time. Both are solid and fit snugly, but do not expect to flip either of these visors up, it just wont work. The colour is a small issue but Black goes with everything.
EDIT: Oh, OneEye is right the football helmet does stick out from the face, it's not as noticeable in the Power Miner helmet. Personally, it doesn't bother me and I'm sure a neck bracket with goggles or armour would suffice to take any oddness away.