You simply cannot go wrong with these tanks! They're the workhorse of tanks! Bought several of these purple tanks for my Godmod180 and they work great! I prefer a multitude of options, thus the huge mod, and these tanks fulfill one of those options. The tanks rate at about 2.70 ohms and provide a great vapor and flavor at 4.3v 7w. I had an issue with the first order but PUFF fixed it. For my taste, I use no more than 50% VG unless I thin it out.The vg is a bit thick and I get a better draw that way but it's really a matter of taste. I would easily recommend these tanks to anyone. Here's a little tip: either use a cotton swab or a bit of tissue to plug the mouth hole before you remove the bottom to refill as a little liquid will usually drip out and onto your hands. Stuffing the hole while refilling will eliminate that. This is not a failure of the tank. Awesome tanks at a great price! You can't beat the value!