Currently im using a device I got at the local tobacco store. Its got a white rechargeable battery on it that says "puff" in blue letters. Its got a button that turns blue when I press it and they thing came with a wall charger and usb charger. The top is just a clear tank with a removable top that you dump the ecig juice in. So far its been good to me. With the original top It seemed like I would get the juice in the hole too easily when refilling and it would take awile for it to start making vape again after I filled it. Recently found a store that made exciting new juice and I got another tank for it. I had assumed the tanks were the same, the look the same etc but this one has a thinner metal opening when you remove the tip where the old one had a big plastic opening. This new tank seems to be a lot better and doesnt have issues when filling and doesnt taste burnt like the old one. Is this basic set up considered to be ok? Ive always been a weirdo and worried that somehow it doesnt vape as good as a vape light saber like some of you have and is somehow not healthy for me. Odd yes, but im a noob. Is there anything inherently wrong with the device im using and is there any urgent need to get something better right away? Just thinking aloud here and looking for some expert opinion. Thanks!