I have recently moved from the Vype EPen to the Vype EPen3 best e-cigarette I have used to date. The only thing I have noticed is that the refills don't last as long as the ones for the original EPen, they are cheaper so it could be the volume is less than the original one. I would not go back 10/10 for this product - even better when they offer the whole EPen3 system for £14.99 good value for money.