The black iriduims are awesome!
The lenses that came with my half jackets (fire) were pretty good, but I wanted something that was a little truer to color as well as darker. The Black Iridium lenses have done the trick. They work great on just about any light, even reflecting light off of water. As a side note, these lenses make colors more rich especially the sky which made my trip to Arches NP even better.