I've been vaping for a long time and my all time favorite tank to date, hands down, is an Innokin iClear 30S. I've tried many of the others, including the Aspire Nautilus, but for ease of use and low/no maintenance, it's the iClear all day. It just works, and works well. No gurgling, no leaking, no dry hits, just works awesome. The coil lasts a LONG time (~6 wks) and replacements are very inexpensive too. The only word of caution is that the tank isn't glass, so some juices like cinnamons may degrade the tank.