There's more to a light than its output.
You know, I have steered away from them for work because of the laser like beam and like something with a little bigger spot. I just picked up the SL20L and the hot spot is a little bigger but I do wish a little more. Throws like a demon though. I guess if they are in fact xml's I hope that opens up the beam profile some. But nevertheless they will probably get more of my money. The TLR series has been upgraded too, 600 something lumens. Super sweet.