After reading some of the posts here, I decided to order a couple of pro tanks from canvape. I have never really been a big fan of bottom coil tanks in the past, but thought I would give these a try and see for myself what the hype was all about. Well they arrived this morning and my first thoughts are impressive. One of the cons I read was the drip tip is not interchangeable, true but, the drip tip is very comfortable. I haven't had any issues with leaking or gurgling, I have also read that you need to keep a juice level of 1/3 or better. I am very pleased with the good solid vapor production even at lower voltage. I have not experienced any loss in flavor, in fact I find it to be better than my vivi nova's. I make my own vg juice, so it is thicker than a pg/vg mix. I would also agree with an earlier post that fruit flavor juices need a lower voltage and dessert flavor juices need a little high voltage. Also pleased with the fact that the pro tank comes with a cone to stream the look when using a twist battery. Another big bonus is the price of the replacement coils, very affordable. The pro tank is a juice hog but I guess that's the price of good vapor production. I like the pro tank so much that I ordered two more today. I guess I'm a bottom coil fan now.