I went down that rabbit hole... I consider myself pretty much a tootie puffer. I like a .7-.8 ohm single coil build @ around 20 watts. I am more for flavor, and don't like the very airy draw.
There are times like after work, I like to just fog it up. I Recieved a tri-coil Xcube II from a giveaway lately, and using the tri coils were nice, but not an all day thing for me. The contest didn't give me an RDA deck, so I bought both the single and dual coil rebuildable decks, so I am trying the single out as we speak. This is a cloud chasing atomizer, and I find it hard to limit the airflow.. even when it is mostly closed, it still feels airy, and it now has a whistle. So, I might use the dual coil deck for my "heavy" moments.
So, if you can, go visit a vape shop. One thing you'll find, is that most vapers are really friendly. Just bring your own drip tip.
Flavor wise, I think the Nautilus is about as good as you can get. Beyond going to rebuildables/drippers, I don't think you'll find much better.