Would've given it a 5, if it didn't have stress marks on it after only one month. The optometrist sent it back to Oakley and got rid of the stress mark by making it thinner (polished away the stressed-out part?). However, the lens transmission became higher, i.e., it went from very dark sunglasses to barely blocking out any sun. The mirror factor is still there, but people can actually see your eyes at certain angles now, whereas they couldn't before. This is why I gave it a very generous 3.

So to recap:
Before the stress mark: 5
After the stress mark problem was corrected: 3

Great looking lens, garantied to get you noticed. I haven't had any problem with reflections but it certainly has a stonger mirror than other iridium lenses.
The difference with non Rx fire lenses is that you don't get to see them before you buy them so you don't know if your lens will be more yellow, green or red due to batch differences.

My Rx Half Jackets are in fire iridium. They are really cool. My only problem with them is that I see some reflection at certain angles. Other than that they are great.