Two weeks in with my nautilus, it often sits partly full, and unused for most of a day, filled it several times now, so far it is my most favorite tank.
Wife has had some troubles which we assume are use patterns and are going to swap tanks next time we are both at the rinse and refill point at the same time.
I get some gurgles once in a while, maybe first 3 puffs after I have let it sit, especially if I am outside (coldish at times) and set it on a chair to vape on my other tank for a while.
Still my favorite, I would even hold it up against some of the rebuildables I have tried, and I prefer variable wattage by a great enough margin to keep using the nautilus to avoid the issues many people speak of with rebuildables and non-mech mods.