the last couple months I've been vaping unflavored nic at 70/30 pg/vg with 12.5% nicotine. my first surprise was how well I like to vape it. it has a natural sweetness and good throat hit from the nicotine. my second surprise is it doesn't clog the coil or filler of the carto. I have been vaping this same carto for the last 41 days and it draws like a brand new one. I vape it 1/3 to 1/2 the day. the rest of the time I vape my DIYs. a cart normally last me 4 to 5 days tops. it's nice knowing I have something I can go to that will absolutely work well. I will post again when I hit day 50 and we will see just how long this boge 2.0 single coil goes.