I just got my 901 yesterday, and started vaping last night. This stuff is awesome. I smoked a pack of Camel Lights per day until last night. I figured I would have the horrible withdrawal symptoms that I had last time I quit smoking, but that's not the case. I do have some "withdrawal" feelings, but from what I've read is that it's for the other chemicals that were in the cigarattes that my body is no longer getting. But it's very tolerable and something that I can deal with. I hate that it has taken me so long to finally try these out........amazing stuff.