There are so many e-cigs on the market now that finding the best e-cigarette can be hard. Your best bet is to read reviews and talk to friends who have tried different brands. You also want to consider the following questions to make sure that you are really getting the best one for you.
Disposable or re-chargeable?
The first thing you have to decide is whether or not you want a disposable e-cigarette or a rechargeable one. The disposable ones usually are good for 300 puffs, the equivalent of a pack of cigarettes. The re-chargeable ones allow you to refill the tank, or change the cartridge, when you have run out of nicotine to provide more. Over time, the rechargeable ones can be cheaper, but the disposable ones may be easier for you to use.
What to look for in flavor?
When you are finding the best e-cigarette for you it is best to check out the flavors that are available for the brand you are considering. With the refillable style e-cigarette, flavor isn’t an issue because you can use any flavor from many different vendors along with being able to choose the nicotine strength. With an e-cigarette that uses a branded cartridge, you are limited by the flavors offered by that brand. One of the best ways to find the flavor you like is to buy disposable e-cigarettes from the brand first and find the flavor you like. If you want to get a refillable e-cigarette you can buy a sample pack of flavors to try. With the refillable kind, you may consider purchasing a few tanks to hold multiple flavors as your tastes/preferences change throughout the day or week, and not have to mess with dumping and filling the same tank over and over.
Cartridge or atomizer?
There are two different ways that the nicotine liquid is added to an e-cigarette. The first is through the use of a cartridge. These are pre-filled with a nicotine flavor and screw onto the battery. They are built with the heater element and wick all together as one unit. The atomizer method is sometimes also referred to as a clearomizer or a vapor tank. It is usually a see-thru top with a mouth 
piece and a wick that is screwed onto the top of a battery. You remove the mouth piece and fill the tank with the liquid before using it. You don’t have to fill it before each use as the atomizer can hold as much as a cartridge.
The atomizer tanks
There are two different kinds of atomizer tanks for e-cigarettes inding the Best E-Cigarette – the basic replacement tank and the re-buildable tank. The basic replacement means that when the wick degrades that absorbs the liquid for you to vape; you just unscrew it and put the next one on. This is the simplest to choose. The re-buildable ones are usually found with the moreWith these you will be dismantling the tank and replacing the wick and heating element, reassembling it and using it again. This is a very precise process and if it is done wrong can damage the whole unit.
The battery and accessories
The last thing you want to look at are what batteries and accessories are available for the e-cigarette you are considering. There are many different styles of carrying cases, necklaces and even pen style clips to help make using one easier. Size is important since you will probably want to carry your device with you regularly (with hopes that you will need it less and less) and some of the bigger devices can be rather cumbersome. Reading reviews from other users and checking out their experiences will help give you some insight.