Review/teardown of similar headlamp here. I would say its a good headlamp considering the price and XM-L2.
Here is triple emitter "HD2010". 25,33$. If I remember correctly, heatsinking in this light is crappy. Which is why its not popular (?) But for people who are into a little bit of "mechanical modding" I would guess there is a lot of potential..
Single emitter of the Yupard 5 XM-L light. Im not sure if the heatsinking is bad in this light too (like the 5 XM-L version with no pill). But again.. Interesting host for modding... Might need some mechanical work.. 23,72$
3 Emitter headlamp (with different beam profiles), 24,91$