Just received my E03 warm white. First thing i noticed is the damn GITD tailcap. Looks totally out of place on my red colour E03. So I just put a red rubber cap on it....it fits! I do not mean you open the screw in the tailcap and pull out the rubber.... just put the new rubber cap on top of the GITD one, it fits just nice. heh.... Just a 10 seconds job. You can change out for black nearly instantaneously as well.
The warm white is really good. There is no wierd tint when at ultra low (I am currently on 1.2V nimh), the warm white just stays the same tint. No PMW flicker as well, coz its using current reg. Really good. It just looks like a incan bulb, no green tint, no pinkish hue.
A low mode on warm white is good, coz our brain is very adapt at seeing a warm white colour temp when at very low light levels, eg a candle, or a incan room. Cool white is good for blasting 2000 lumens in a room but not good for low light levels, it looks wierd and very errie.