One more thing. The E3 holds more liquid than a CE4. I didn't bring my butterscotch bottle to work, and didn't want to waste my favorite juice, so I poured the remainder of the E3 into a CE4 and it filled to the rim. The E3 wasn't even completely full... I suspect that it holds an entire 2ml in it, which I think is about .4ml more than a CE4....

