I saw one of those (at the old price) at my local Lowe's a few weeks ago. It's the only XM-L flashlight I've seen in the wild. It looks like a beefy C8-class light that would be conservatively driven (based on the 500-lumen rating). Just examining it in the package, it seems rather heavy so I assume decent heat sinking; per the Lowe's specs, .47 lbs. It seems like a decent light, but the high-price and 3x CR123A cell configuration are deal-killers.