I am new to the DIY scene and wanted some input before I make a purchase. I've zeroed in on the three manufacturers listed in the subject line. I understand that DV is going to be more expensive than the other two (though I am wondering about the actual cost differential because DV appears to require less concentrate per ml of vape ready juice than the others), but the trade off appears to be more complex flavors. What I am asking for is a little guidance in where to go from here. Thanks in advance for any answers to what may be a dumb question.