A few comments from an avid vaper of nearly a year.
Do not vape the 52mg stuff someone posted a pic of unless you want to be sick. It is nicotine base meant to be mixed with additional PG and/or VG and optionally flavorings, thus bringing nicotine content down to more reasonable levels.
To the ecigs are worse than cigarettes because OMG CHEMICALS crowd;
There are dozens of known carcinogens and hundreds of additives in cigarettes. Many of the harmful compounds are a result of the combustion process which produces the inhaled smoke. Ecigs do not burn anything, they heat a liquid to produce vapor which is inhaled.
While it is true the long term effects of ecig use is an unknown the harm from cigarettes is well documented.
Eliquid contains nicotine, propylene glycol(PG), vegetable glycerin(VG) and flavorings. Nicotine at the levels in ecigs has been shown to have some positive effects and the other ingredients have been labeled as GRAS(generally recognized as safe) by the FDA.
While I think routinely inhaling anything other than fresh air into your lungs is probably not a good idea, the notion that it cannot be anything other than horrendous is just silly.
For anyone considering taking up vaping for whatever reason;
Unless you are reasonably sure the small pencil sized ecigs known as cig-a-likes will be enough for you to quit cigs or are just completely turned of by larger PVs(personal vaporizers) then I would recommend skipping them and getting an ego sized or box shaped PV. Most people move on to the larger sized units in a matter of weeks looking for more vapor and flavor anyhow.
The aforementioned MPV box shaped PV is a good starter PV. It has a long lasting battery, takes 510 or ego style atomizers and has varaible wattage mode which allows it to automatically adjust the voltage to give a similar vape experience when switching out the atomizer to one with a different resistance.
If box is just not your style, the Vision Spinner, Joyetech Twist and Innokin iTaste VV are well regarded and are adjustable as well. However they do not have as much battery capacity thus you may need to get two in order to have an all day setup.
As for atomizers I would recommend a bottom coil clearomizer(BCC) from Kanger, Aspire or Innokin. They have replaceable heads that contain the wick and coil making it easy to rebuild your atty.
If you want to skip straight to a larger light saber, mag lite sized advanced personal vaporizer(APV). The Provari is widely acclaimed as the best. As someone mentioned in this thread they are like the ipod of the vaping world, have a cult following, don't really do much other cheaper alternatives cannot but are a high quality product. Personally I have had a great experience with an Innokin SVD and a Vamo V5. These APVs generally have more power and are of a larger diameter allowing for a seemless look when using a rebuildable tank atomizers(RTA) the most popular choice for these APVs. A RTA does not have a head but rather you build the coil and wick it yourself. I like the Kayfun variants.
There are also Mechanical Mods which are mostly a cylindrical tube, sized to hold a battery with a switch on one end and a 510 connection on the other. They can be dangerous without a working knowledge of Ohms law and an understanding of the capabilities of whatever battery you use. They have no adjustability so most pair these with a rebuildable dripping atomizer(RDA) and build the atomizer to the resistance which gives the vape they prefer. I have several of these and haven't really formed a favorite yet.
Concise writing is not in my arsenal.:|