Another vote for the Nautilus.. several acquaintances use it and I only get positive feedback from everywhere. Anyway, there are few truly MTL atomizer tanks.
Let’s see what’s on the market
Voopoo Doric Astra
Aspire Nautilus
Innokin Zenit
Geekvape Z MTL
That’s all that comes to mind.
Tasty Vapors 
If you need a source for something, I’m happy to help privately.