OK, I think I am ready to start looking at a mod. Up to this point I have been using my starter set-up from V4L. I think I am going to buy a Lavatube as soon as kits are available. (Yes, I would love to have a ProVari - but after I give vv a try.) My question is this. I want to start out using cartomizers. I have no idea what ohms the V4l carts are. What Ohm blank carts should I look into buying to use with the Lavatube? I really appreciate any help you can offer.