I can tell you that many of the more common type seen are the cig-a-like types. They seem to be "name brand" and many of these places make false information claiming them to be the best. I have even seen one website some time ago (a few years ago) showing different so called name brands and comparison. It made it like a review from an individual person vaping the different ones and comparing; "tasted like a real cig", "length of battery" and so on. However if you look at the html language (code) you will see that it was created by the very company that made the one that was the best.
These also sell for a lot of money and almost always disappoint many of the people that use them. This is a big problem with these companies and new people. Thankfully you did find this forum. The forum is made of real people that use the electric cigarette/personal vaporizers. There are some real honest opinions. Remember, do not get confused because we all state our own opinion.
Now, Joyee is a name brand of the EGO type e-cig. Some people (I'm right now in Malaysia but from Texas) call them e-cigars. The reason is that they are thicker in size than a cigarette and about the size of a cigar. Some others are name brand also. There are a lot of different clones and many of them sell cheaper than the name brand and some people do not see any real difference in length of time they last or the way they function while some people do say there is a difference.
Depending on some of these units, if you like the way it is you may be able to refill them. Some of these name brands use three parts (battery, atomizer and a tank called a cartridge) while some use two parts (battery and the mouthpiece or cartomizer) - in truth the cartomizer is the atomizer and the tank or cartridge all in one piece. It depends on which type but some are able to be cleaned out and reused by filling up the cartomizer or the cartridge with e-juice (the liquid that is heated up by the atomizer and carries the flavor and nicotine to you and "becomes" the vapor or "smoke".
The way it is advertised is very misleading. They use the amount of nicotine it contains and compares that to some of the different "analogs" (cigarettes). For instance, some of the cigarettes contain 1.2 mg of nicotine in each cigarette. 10 cigarettes is then 12mg of nicotine (this is hypothetical and not necessarily a real amount) then 20 cigarettes is about 24mg of nicotine. I am assuming they are referring to "lights" and so 24 mg may be 2 packs of cigarettes (which I don't think that would be correct but could be). This also had me confused as well since they seemed to last about 5 cigarettes (puffing on them for about the same as I would a real cigarette). This causes a lot of confusion among many new people.
If you are looking at getting a new unit, there are some great types. I have been vaping off and on since 2006 and after many different cig-a-like disappointments, found this forum (different username then) and got me a KGO. The KGO is an EGO clone that was at 3.7v and lasted about 12 hours of vaping time. To get the vaping time, take the mAh and about 100 = 1 hour. This can depend on several things - the way you vape is one but the biggest is what you have on it. I also used an atomizer and a tank cartridge and was getting juice in my mouth (yuck) so I started dripping. I stopped using this full time and was using it only when I could not smoke (typically only at work cuz can not smoke inside the work place - by the local law in San Antonio). After my two KGO batteries broke I stopped using them and was smoking and would just suffer at work. I then got a new battery but it did not last long because I dropped it at work and it broke. After several months, I noticed the KGO had a variable volt (vv) and bought it. I then bought the spinner vv to see what the difference was (the original KGO vv was only like 850 mAh instead of the 11500 (I think that is the original KGO mAh). These were great until the Spinner VV fell into the fryer at work (not good and got in trouble too) and the KGO vv was overheating and not lasting long at all. I was also getting tired of dripping or using cartomizers (always burning and even going through e-juice like water in a desert - fast). I decided it was time to get a different type of unit. EGO and others like it, the unit is the battery and to replace it costs about $25 or more. I decided to get the VAMO because you can take out the battery(battteries) and charge it and when you have to replace the batteries they do not cost as much (I can find 2 18350 batteries for about $25 to $30 - sometimes a little less and sometimes a little more).
I don't ever recommend a Mod (Modified type unit) to a beginner though. This is just me. I will recommend an EGO (clone or name brand) with a decent clearomizer. You can get some of the different Kanger types or a vivi nova type (mini would be best for the EGO size - my opinion only). Many of the places are now selling EGO types with a type of clearomizer. This is perfect for the beginner. Depending on how often you smoked would depend, if you are able to vape (use the electric cigarette) at work and you have a plug in outlet would depend on what type you get. If you can plug it in, get a "pass through" - this type does not have a battery but you plug it in and vape it ("smoke"). If you get a "pass through" battery type, you plug it in and it will charge the battery and you vape or use it (you use the power from the battery and the plug is charging the battery - so it must be a charged battery). The pass through battery type is not recommended for "chain vapers" like myself cuz it will cause the battery to always drain completely and will weaken the battery and cause it to overheat (hence my KGO vv problems). If you are not able to plug it in (yes in a vehicle with a lighter plug works just as good from my understanding) then you will want to make sure the battery will last you at least that long. Many sets will come with two batteries so you can be charging the one from work while using the other. This is recommended also because it will help you get started. Later on you can buy another battery or two and have one or two being charged while vaping one and having another ready (especially if you become like other people - swapping to a different flavor). By having it this way, you will have two batteries and two atomizers/cartomizers/clearomizers (etc..) ready with two different juices and can vape one then switch without having to take off the atomizer/clearomizer/cartomizer and put the other on. Some people also like to vape different nicotine strengths - based on their previous smoking habits...more nicotine in the morning and less nicotine in the evening - just depends on the person.
If you can find other people who vape near you, you can meetup with them and try different e-juices and even try different units. This can really save you some money and even help you plan on any purchases in the future. Some people do find there are stores nearby them that will also let you try different juices to see what you like. Look around the forum...there are groups that you can join that are based on area and also different sub forums. You can always go to one of these and maybe even find a meet-up or gathering of different people that would be willing to let you try what they have.
I hope that this and other comments have assisted you in your confusion and hope you are now a little more educated and more equiped to get into vaping.
Vape to Live and Live to Vape -- Vape on!
