So finally received my Ultrafire Cree C3 and WF-602D Cree HA-III.
The Ultrafire is much smaller than I imagined, especially without the extension tube(2AA), very birght light for the size. I encountered a problem the the 2AA extension tube. One you use it with 2 AA batteries, the light won't work. Later found that the extension tube wasn't in contact with the ground of the switch when screwed in. So I unscrewed the switch by 1/2 turn so that the extension tube makes contact with the switches ground and everything is good!
The only regret I have is that 2 days after my Ultrafire C3 was shipped, dealextreme came out with a 5-Mode Ultrafire C3 for 20cents more
Now onto the WF-602D HA-III, man this thing is tiny and crazy bright. Almost 2 to 3 times brighter than the Ultrafire C3, blinded myself the first time I turned it on
The only thing I don't like about it is it's a bit bulky to put it in your pocket, that's why I ordered the WF-602C SSC, same lenght but much smaller diameter (0.5" instead of 0.8")
Quick question about the WF-602C SSC, is there a difference in birghtness running on AAA or 10440 batteries? Or is it regulated(like the Ultrafire C3)?