This is just going to reflect the opinions of most on here but I will also argue that if you are a heavy smoker, no portable vape will compare with a volcano. Yes its expensive, yes its a bit on the bulky side, but as tip top says, it fucks you up if used correctly.
Tip top also raises another good point here, when using my vape it just doesn't give the in your face high from smoking a big fat joint but, that is by no means a statement from me saying vapes are shit. You just need to be aware that the high you will be getting is likely to "feel" different than a big joint or bong hit.