Hello everyone! I read somewhere on these boards that a 2.8 ohm head would be ineffective on an ego-c twist-- to paraphrase, "I don't know why anyone would ever need a 2.8 on the twist..." Having just watched riptrippers new video vaping for beginners, he explicitly addresses the twist, as so many newbs have told him it's their choice. He says that a "regular resistance" carto is your best bet for a twist, citing a 3 ohm as ideal. Hence the contradiction and my new uncertainty (after just ordering a 2.4 ohm replacement head!). After watching the vid, I immediately put my 2.8 ohm head on my vivnova mini, voltage set at ~ 4.6; all I can say is WOW, what a difference. It's vaping better than ever. I'd stick with this resistence based solely on personal exp, but don't want to ruin heads, hurt the battery, or waste money. Have a 5 pack of 2.8's in my cart. Should I pull the trigger? Thanks a bunch.