Hi Gretchin,
I have both of those lights.
The 3C doesnt put out MUCH more light than the 4AA.
Its not really noticable till you go outside, and shine it in large areas.
The 3C is however rated for about twice the runtime of the 4AA.
You are only getting 3 more 5mm LEDs with the 3C, so, imagine a 3 5mm LED light added to the 4AA (7 LED) light.
If I remember /ubbthreads/images/graemlins/wink.gif I will try to take some beamshots tonight compairing the 2 lights.
I have not tried lithiums in mine yet. I would imagine alittle improvement. Although, I an not totally sure this is recommended. It will run hotter. Some ppl have notice discoloration of the reflector after long use.
[EDIT] oops ! did you mean the LED versions? What section am I in??? I am lost! /ubbthreads/images/graemlins/ooo.gif LOL
[EDIT] Damn, yep I am not in the LED section. LOL Well, I have no idea about the incan versions. /ubbthreads/images/graemlins/frown.gif Sorry.