Hc90vn on the left. It's got a wider beam profile than the sd6vn which is a mule! (no reflector)
If your not needing it on your head, you can take off the headband and loop your belt through the mount making for a super useful headlight for your belt. You can use it that way if your just walking around.
I find I use it that way more than on my head.
Btw. The "vn" suffix indicates it's been modified by vinhnguyen54. It's 1200lm monster and costed the same as stock.
You can pm vinhnguyen54 if you're interested.
He's a great guy, and his customers service is second to none. If you EVER have a problem, you'll have the light back in a week completely fixed. I know of no company so good.