Neutral tint. Tint is warmer with this xp-g2 r5 than the neutral xm-l2 t6 in the E03. It's a little purple-ish compared to my neutral SC52w L2 also, but close. Bought the ES1 primarily because of the cheap price and the ability to clip it to a cap and use as a headlamp (minimal weight). The only problem for me is the switch for reasons previously stated by others. It's just not user friendly. It's not bad, but there are plenty of better options...
edit:
Now that I've got it out and this thread has renewed my interest, I'll probably get the warm version too and another diffuser... Switch issues aside, they are perfect as candles.