See, I'm on the opposite side... the Nautilus tank with the old BDC coils was an ok vape. The new BVC coils are just downright terrible... The ceramic-y taste of the wicking material overwhelms any juice I put into it and makes it taste like a hot mess...
When I must used tanks, rather than my drippers (i.e. at my desk at work), it's Kanger Aero's and Megas all day long. For a silica wick, it's clean and the coils last for a good long time.
It's an incredibly personal and subjective choice however - I'd recommend Kanger over Aspire every single day (and twice on Sunday), but I'd encourage folks to try both. There's around 5-6 full size nautilus tanks collecting dust at the house now. They wifey got jealous of my juice tasting better in the Kanger tanks... Just as long as she stays away from my drippers...
However, with the sub ohm tanks, that Atlantis is tops for me. The Kanger subtank is just too hot even at low wattages (both .5 and 1.2 ohm coils). The Aspire is cooler... once you tear apart the crappy coils and build your own to get rid of what I've now taken to calling Aspire Ceramic Flavor... ;-)