Someone on cpf tested the Eagletac p100a2 and only measured 5,150 lux at 1 meter, sounds like it's mainly for flood. The Dereelight javelin with smo reflector and Cree XR-E R2 module was measured at around 10,000 lux
The Javelin is nice but the balance of flood to throw gets uneven to me favoring throw plus the big head and overall a bigger light. Not sure which drop-in but the XP-E R3 looks nice.
It was measured 5,150 Lux back in Mar 10, 2009 using a Cree XPE Q5. It has an R2 now. Having ownded nothing but AA lights for throwers experinece the P100A2 has of the best if not the best throw to flood balance. The Dereelight Javelin 2nd. Unless you want all throw.
They also measured the P20A2 Mark 1 at 7510 Lux yet my P100A2 (XP-E R2) hotspot can be seen brighter in the hotspot of my P20A2 Mark 1(7510 Lux)
So now you have an idea of the P100A2 R2 Lux. I could not find any Lux on the XP-E R2 taken but I have seen it once forgot where though. If I recall correctly, above 7,400Lux.
Links:
http://light-reviews.com/eagletac_p20a2/
http://light-reviews.com/eagletac_p100a2/ (Q5)
Javaelin: Throws farther, Eagletac is second. Want to see the XP-E R3 Model.
I much prefer the Eagletac. Has great throw, and flood balance. (XP-E R2)