Here's what I found in our informal light output & beam throw comparison:
1. US vs Magcharger- US wins in overall light output with a MUCH smoother beam. We had to call the throw a draw since both lights can focus a very tight spot at a considerable distance.
2. US vs Surefire 9AN- US wins both tests, hands down. The 9AN has an evenly smooth beam, but much yellower in comparison to the US. Throw competition wasn't even close.
3. US vs Surefire 9N (& 9NT)- The 9N beam is equally smooth compared to the 9AN, but the 9N was whiter with a brighter hotspot. Not sure why, we thought they use the same lamps?? Anyway, the 9N just wasn't near as bright as the US. And even with the turbohead, it couldn't outdistance the US. Not even close.
4. Surefire 9NT vs magcharger- 9NT wins beam quality, mag wins throw.
I don't think the 10X belongs in this type of comparison...and for $500 it had better blow any of these lights away.
BTW, I am a fan of surefire (just ordered my 1st one, the E2E-HA) and tried to keep an objective opinion in these comparisons. Nobody argued about the results. I know that every light has its own applications, but am surprised that at twice the price of a US or magcharger Surefire doesn't have a model that blows away the competition.