Okay I'm waiting on my job to pick back up but I think I've decided which PV to start with. I've read good stuff on the DSE901 and heard it's one of the best for first-timers, so I think this is the one I'll begin with. My question is basically how often do atomizers and liquid need replaced for this unit (approximately, I realize it differs from vaper to vaper)? I'm trying to figure out how many atomizers and bottles of juice (I'm planning to refill carts myself in an effort to save money [my job's completely up in the air right now, I'm currently laid off with hopes of recall]) to add in on my first order of the starting kit, this way I'll also be saving money on shipping costs, yet still like I said I can't order hundreds of dollars worth of supplies, unfortunately 
Thanks in advance.
Thanks in advance.