For anyone that wants to use tanks with cartridge coils, I always recommend the tanks that are part of the Atlantis type cartridge "family"... it's a design that is very proven, as several companies have been making these cartridge coils that are near identical, which gives you a huge selection of types thanks to this.
The tanks I recommend are:
Eleaf:
Melo 2 (sliding door for top fill is probably the best design in any tank)
Melo 3 (top fill is screw top)
iJust (bottom fill)
Aspire:
Triton (V1 is a lock to close flow and pop-off top, excellent design, very easy, nice metal cage tank.
V2, the metal cage was removed and the top is now a screw-top, I prefer V1)
Freemax:
Scylla (push and twist top fill, neat approach, works well, and you can get an kit version that comes with an RTA, which isn't the greatest but still, it's something to test out if you want to go with RTAs)
For coils, there's a long list, but the beauty is that most are cross compatible, here's a list of other tanks that I didn't mention here and how compatible they are:
https://goo.gl/r54pW0
My preference are the Vaperaso ceramic, which I end up taking apart and rebuilding
Note: all of these coils are near identical and are easily taken apart and can be rebuilt, and to be honest, every one of the rebuilds Ive done are better than factory made. I support them enough that I made a image guide about this:
Vaperrasso cCell rebuilding
P.S. not to discredit other people's choices as it's all about personal preferences, but the Nautilus is a tank that I can't stand, never liked them and the coils were always short lived, my wife and daughter each had one because of all the "recommendations", and these tanks ended up in a drawer to be forgotten for good the moment they had the much better tanks (as per my suggestion above). And if you vape mouth to lung, you can do this with almost any tank, this simply requires closing the airflow, lowering the wattage, and possible getting a tighter nib/mouth piece.