Is this the optimal balance between vapor and flavor? What do you use, and why? I am new and trying to get used to this whole vaping thing but it is a lot to take in! Also I am currently using a crappy 20 dollar starter kit but I have a 510 in the mail. I am very interested in box mods, are there any sites where these are affordable? which would you suggest for less than 50 dollars? Do any of these run off of AA or AAA batteries?