I started with a Volcano Inferno Kit with 1.8 ohm carto and enjoyed it for the first few days, though the american tobacco 18mg fluid started tasting too sweet after a few days. Finally went to a brick and mortar store (Vaporescence) and got a 36mg 30ml bottle of Neo Port and used a 1000 mah batter that night and in the morning before work. I ordered Totally Wickeds Torpedo and got it this morning and it rocks. The clearomizer that came with the VV unit is so much better then the carto set up I had. I was just curious if anyone had any suggestions for simple, easily replaced Atomizer units outside of the Vision Vivi Nova 3.5 ml unit? I noticed innokin has a nice dual coil unit in 1.6 and 3.5 ml sizes though I can't find the 3.5 for sale anywhere. Also can those dual coil heads be used in Vivi Novas? Also what is your experience with the shortage protection for battery mods? Thank you for your time.