I got a Joyetech AIO recently. Filled it up and used for the 1st time on Sunday. I only hit it a dozen times or so that 1st day using not even 1mg of the 2mg tank. It vaped wonderfully with excellent flavor. I came down with a bad stomach flu so it sat in a drawer til now. Tried vaping it and tastes slightly burnt. Don't know what happened.. The juice is La Dolce Vita by Ruthless. It is 3mg and 70vg/30pg. Somewhat dark for 3mg juice.