This little light is the bee's knees. I've had mine a few days now and I love it. Every time I turn it on I can't believe it will put out that much light for over five hours. I got a T2 because of the long run time, but the beam from my X0 is more useful / practical for me. The beam is white, not blue, and smooth but I'd never notice it being "smooth" except comparing it to another light on a wall. Nice hot spot and good spill. I can't guess at any numbers, but I think it's as bright as my Fenix L2T with AA lithiums in it. I wish it had more grip to it like my T2 'cause these aluminum lights can be kinda slippery, but the output is great. Just my opinion, natch'.
Ken