A2 uses Cree P2 - MXDL claims 80 lumens.
A3 uses Cree P3 - MXDL claims 100 lumens
A3 got rave reviews in DX. So I think it is quite good for what it is.
I have no idea how bright it is as I couldn't find any exact readings.
I'm expecting it to be around single-mode Ultrafire C3 in brightness.
Romisen RC-G2 is said to have similar throw output to WF-606A or L2D CE.
So it's about 1.5x in throw output to the single mode Ultrafire C3. Not bad!
But as it uses Cree P2, so hotspot is bright but you lose out in spill output.
It has a forward clicky which is not common and has great build quality.
RC-H3 according to DX review has around 700 lux @ 1m.
That's similar or less than the single mode Ultrafire C3 AA.
But according to that review, it pulls near 2A from battery!
That is about half the efficiency to more recent P4 lights.
(Such as the very well regulated single mode Ultrafire C3)
Don't just fall in the trap that newer LEDs are always brighter.
Old P2/P3 can be easily as bright as P4 but with shorter run time.
anyways.. there are brighter/newer lights that use AA in that price range.
MTE 5 mode Rebel ,
MTE SSC P4 AA , Ultrafire C3
single-mode /
5-mode etc.