Actually, there's a big thread on it in the LED section, no search required since it's on the first page.
Looks interesting but I didn't get a Jetbeam because of the UI, same applies here. I think I've had enough of these pre buys and GB's of unknown Chinese (not that this makes any difference) lights. I got my jetbeam after 3 months, my rexlight (will be sold soon after I take a quick look at it) will come after 2 months. I'm tired of all the clones that don't really do anything innovative and don't feel like paying my money and waiting months for a product.
The Fenixes are great with good UI, Lumapower has new developments every week, these are a little more satisfying. I put an OP reflector in the Fenix now it RULES.
I'm keeping my jetbeam because it is a beautiful little twisty. Hope it doesn't fizzle out when I start running it at 3V...