I've had good luck with Joyetech standard resistance 2.2 ohm dripping atomizers at around 10 watts, or 4.1-4.2 volts. Still gets a little hot, though...
Joyetech logo, 510 Atomizer, 2.2ohm, Black
The header says 2.2 ohm, but the text says 1.5 LR.... But the 2.2 ohm SR atomizers look exactly like this.
EDIT: After reading their description, I'm not sure if that vendor knows what they're talking about... But anyway, a genuine Joyetech 2.2 ohm atomizer is probably what you're looking for.