$45 shipped for XM-L2 Warrior is a really good price. Go for it!
According to my initial tests, this XM-L2 version is about 15% brighter than the "old" XM-L version (2400 vs. 2080lm OTF after 30s), making it second brightest stock light I have tested (straight after CW BTU Shocker)
And the light itself is as good as JM has already said in YL-U2 thread. Sure the PWM exists in lower modes, as bad as SRK, but at least you have infinitely variable brightness from about 100 to 1800 lumens.