The number 7 was the first I ever bought.. PLEASE do yourself a favor and dont go buy that crap over the counter. Do yourself a huge favor. If you want something that resembles the size of a cig order a 510 from cignot.com or another reputable dealer. Don;t buy mall junk, because all its gonna do is turn you off to
vaping, and
vaping is a great thing. If you want something to help you switch from analog to smoking either get a 510 with a PCC or a larger battery like an Ego, Riva, Tornado, etc.
The pros and cons are:
510 pros:
About the same size as a cig
510 cons:
the battery life is gonna make you wanna tear your hair out, if your anything like me.
cant attach low res atties, at least not without taxing the battery and having it die in a couple days.
Ego Pros:
Better vapor due to the battery not draining as fast
Can attach a low res atty on it if normal 3-3.7v isnt enough
with 2 batteries the PCC isnt required as much
small, looks kinda elegant
Ego Cons:
Doesn't resemble a regular cig.
Personally in my opinion ANYTHING is better than a No.7. I got one of those at a local smoke shop and its practically been sitting in my desk for 8 months. If you really want to try it, I'll send it to u for free if you promise to buy something decent if you don't like it, just PM me.
If its gotta be small like a cig (that novelty wears out fast after you learn about vaping, trust me) then I'll give it away for free. If it HAS be as small as a cig, get a 510 or another reputable model like the kr808 or others. If thats not a big deal for you, buy a ego or ego clone and get a low res atty just in case the vapor and throat hit aren't what your looking for.
EDIT: I Just realized that you said someone else bought you the No. 7. Just dont base your vaping experience on it.