Hi all, as a 20+ yr smoker that has gone from off the shelf to RYO a couple years ago, I'm thinking about makeing the switch to vape.  I basicaly went from Marlbro lights to a RYO version that is less harsh than that.  That said, at least for now, my focus would be on a traditional flavor to mimic what I'm used to.  I'd say I typicaly smoke up to 2 pks a day depending....  Currently I spend about $35 per week on RYO stuff.  My questions are 1- what "style" of e cig would be a good starting point?  2- Other than the initial cost of the equipment, what's the most cost efficient method?  
From what I've read the battery life is a big factor for someone that smokes like I do.  Look forward to any advice you all can give.  Thanks