I prefer straight sided clearomizers personally. Easier to fill. Top coil T2 or mini nova, or bottom coil EVOD. I haven't received my mini protank 2 yet.
Though for the cone shaped ones (CE4, CE5), iclear16 is the best out of them for vapor as they are dual coil.
I can't help with juices, but they are more important than the clearomizer most of the time for 'getting lots of vape' anyway.
This is just for ego/spinner sized batteries though, and they are all 1.5-2.4ml
tanks. Larger tanks (ie full size protanks or nova) make no sense on the smaller batteries , neither do RBAs or RDAs.
But if you have a VW device or mod, then there's plenty more choices in genny, phoenix, kayfun or oddy style, or the full size clearos from iclear, nova and kangertech protank style, or the RDAs.