Blitz - its a matter of what suits YOU PERSONALLY - its not really a matter of educating yoruself on nic levels. You'll find your sweet spot - almos tno-one gets it right first time
Lookingtoquit - have you read through the smokeless tobacco subforum? SOmetimes the anxiety on quitting is just normal but sometimes its because your body is craving the MAOI (monoamine oxidase inhibitors) it used to get from tobacco. You can get these from sources that dont involve combustable tobacco.
i know, i feel you on that im just trying to set a basis of where to begin and take it from there, but educating ones self and obtaining product knowledge is beneficial to help get you where you need to be. I like to take a general consensus of where others are at and then ill make decisions based of that.