Jeez....these KL1s I just got stink! Yes, the throw is VERY impressive but the tint is TERRIBLE. From reading all the hype on the various reviews, I expected good white tint. Instead, both have a blu'ish hotspot, c.u. yellow-green(inner hotspot edge) and blue to light purple (outer) hotspot edges, and alternating rings of blue, purple, yellow, and green in the corona (not necessarily in that order).
The hotspot isn't even round, its square on both lights. Now, I knew to expect the rings but I thought I'd at least get very good white tint out of these "3-watt" lights. Instead, I'm getting a rainbow pattern with shades of red being the only color not included.
Even my L1s, which also have terrible tint at least have more beam consistency than these KL1s.
I'll keep these since they have long LED life and are regulated, but I'm NOT at all pleased by the tint or beam quality. I won't be ordering anymore KL1 heads again. I've learned my lesson I think, pay a little more (or a lot more) and get the proven product...the 5-watt KL4 and KL5. I haven't had any problems with 5-watt Surefires in the past....
<font color="purple">Edit: outside, the tint is not as bad. Its harder to notice poor tint in a colored setting rather than a white wall. I suppose I can get use to this really strange rainbow tint if I use the lights mostly outside. </font>