My QSP arrived a few days ago.
One word describes it: fantastic!
First off, the very good machining and anodising are apparent. Very nice laser engraving; adds a touch of class, the 'collectors edition' + serial number. Good, smooth threads, fit and finish. The fins have come out very nice.
The light is really solid as a rock. By far the heaviest handheld 'normal' light I own. I guess I won't have to worry about heat sinking there
. With the (freshly charged) C-cells, balance is very good, though. The 3 cell setup is a winner; it fits into my coat pocket.
O.K., time to turn the switch: ... blam!
The beam is more floody than I expected. But the sheer wall of light is so amazingly bright, that it is very impressive. I did a short white wall comparison with my DeCree, and immediately thought de DeCree's battery must be near depletion (I charged it recently, though). So I compared it with my second DeCree, and they were both as bright as they should be (which is the brightest single Cree I 've seen so far). The QSP just overwhelms the beams of all my other lights, including my Ultrafire G12 (estimated at 200 Lumen, and suddenly looking very weak and a sickly yellow).
The beam profile is that of a very broad, floody beam. From the very bright centre, the light gradually just tapers off into an enormous spillbeam. No defined centre spot with a much weaker spill, but one wall of light, with a very bright centre. Very useful for the use I have for it.
The colour is glorious, very, very white. Whiter than any light I own. Absolutely no hint of cream, blue or green.
I took it for a spin by bike, in the woods. It feels like I've my car headlight with me, except for that kind of throw. It lights up an area the size of a small soccer field. Hardly any warming on the outside after 10 minutes. I can't really give a sustained Lumen figure, but my guesstimate is in the region of 700+.
So, did I mention I like the light?
And before anyone asks: no, sorry, I can't do beamshots
http://www.illuminationforums.com/IlluminationForums/showthread.php?t=6
Kees