Hi I have the link for an xml-u2 a little bit more lumens that the T6…i have purchase 2 …very bright… The link is http://www.cutter.com.au/proddetail.php?prod=cut1095 I Know that Dealextreme sell this U2 Bin but in 1C colors and 7000K…it’s too bluish for me…and i don’t trust if it’s really a U2…For Led http://www.cutter.com.au/index.php it’s now my reference for buy many LED. i have purchase XM-L U2 from cutter one in 2S and 2T color…more in 6000-5700K … Brightness Bins for Cree XM-L
Bin
700mA
100%
1000mA
137.5%
1500mA
195%
3000mA
325%
T2
200-220
275-303
390-429
650-715
T3
220-240
303-330
429-468
715-780
T4
240-260
330-358
468-507
780-845
T5
260-280
358-385
507-546
845-910
T6
280-300
385-413
546-585
910-975
U2*
300-320
413-440
585-624
975-1040
U3
320-340
440-468
624-663
1040-1105
What about the U3? hmmmm...
Is the U3 available now?
I checked e few months ago and did not find any even in Cutter.
By the way, I do not believe much about the U2 sold at DX and other chineese websites, I feel they are sending T5 and T6 instead, while they are not marked they can do it easily..
Aren't U3 and U4 quad die? At least that's how the photos look on Cutter.
Hello Hikelite,
I feel that is what is called the EasyWhite model, which by the way it is not very clear on Cutter's description.
I would like to give it a try, there is a 6V version that I don't know if will be fried using 2*18650 DD, in the description it says it is 115º viewing angle, for a 4-die led looks like would make a nice thrower to me, on the datasheet it says they can be driven up to 2A in the 6V version and 1 on the 12v.
So, it looks like a super MC-E hehe.
Here I have just made the size comparrison with a standard XM-L:
Doesn’t appear to have any more surface area than a standard T6. I want to see 4 T6 emitters in one super emitter like the MC-E and it’s 4 P4 emitters in one. 3200-3600 lumens from one die! Yeah baby!!
Yes JohnnyMac, I thought in the first place there were 4 XM-L inside the dome, but it is obvious from the dimensions they are not.
It might still be a killer against the MC-E, being 2A@6V if it is at least as efficient as an MC-E sounds still good.
Edit:
Looking at the picture from the data sheet, it looks like the dies are the same ones used for the MC-E:
How about using four XP-G dies in single package at 6.x V / 3A for 1800 lm. Just imagine the beast with three of these each driven at 6,6V / 2A for over 4000 lm at 100lm/w efficacy for turbo mode and 6,4V / 1,4A each for 3000 lm at 111 lm/w for high mode 
The U3 is not on the market at this time ''edc''....i dream of it!!