I stopped in the University store from out of town and got excellent professional advice from the staff. They were highly informative and attentive to what I was looking for.
I went with this tank paired with a Vapor Flask Lite 75w. It's the perfect blend of size and power. With the SS coils in TC mode you can dial wattage back and get the smoothest vape catered to your liking. Switch over to wattage (SS coils only!) and blow massive clouds. One thing worth noting, in TC mode on the VF, if you keep wattage maxed at 75w it will hit temp protect quick with the .25 ohm coil but dialing it back solves the issue.
Top filling is a breeze as long as you close the bottom breathers as noted in the instructions. Don't do this and you will have a leak on your hands.
The coils are very well built and I'm 2 weeks into heavy vaping with no drop in ohms or performance. I have noticed that it can run through a single battery mod fairly quickly though.
I came from a eLeaf GS tank on an iStick TC40w and the difference is night and day.
Highly recommended. <(>.<)>b