I just ordered some crystal vision cartos for my iGo. Thank you so much for finding another option. The standard iGo carts are good, but some of them burn out very quickly. I had become so frustrated with vaping until I got the iGo a few months ago. Couldn't be happier! Love, love, love, the battery life and ease of filling. Am also looking forward to the screw tip on the Crystal Visions because they always fall off my standard cartos. Can't wait to get these and try them out!