K*rose is right. At least for me vaping is a different animal than smoking. Vaping replaces cigarettes more than just a replacement for nicotine. After a couple weeks looking like a cig doesn't matter at all. I would get a large battery device. Many like ego's. I personally would get an e-power. I have many mods.. provari, joker av, roughstack v2, box mods, passthroughs, 808 and 510 batts ect... If I had to pick one as the best when looking at cost/performance the e-power is the best. It is regulated to 3.7v (most ego's are 3.2v) and uses a 1300mah 14650 li-ion battery. Unlike ego's it has a replaceable battery. 1 battery lasts me all day, and I vape quite a bit. A 510 to 808 adapter will let you vape on whatever atty or carto you want. It only costs ~$23 from gotvapes (unit only) and another $15 for two batteries and a charger (madvapes) And I would put it up against ant of my $150+ mods. I like my variable voltage devices but when it comes down to what I "need" the e-power is it. The only downside is not being able to use ego attachments. (although I think you could with a 510 extension.) The maxi roughstack v2 from madapes comes in second with the ability to do 3.7, 5, 6, or 7.4v at a cheap price. After a few years of vaping when someone asks what they should get to start I will always recommend the e-power