I'm right there with you on the nautilus tanks I had several of the mini and full size. For the past couple of years they have been my all day drivers. I too took a liking to the sub tanks and they replaced a few but I have a couple of juices that only tasted good in the nautilus at lower watts not to mention I missed that tighter draw and mouth to lung hit. My biggest complaint with the nautilus was the way the glass sealed to that base silicone gasket. Over time you have to keep getting it tighter and tighter to seal and it becomes difficult to loosen it. Im really wanting this triton to become my new nautilus. After a little breakin period it's performing well now with the 1.8 ohm coil and with my own drip tip there is no wobbling. That top airflow piece with the heat sink gets a little messy with juice even though I keep it closed. I'm still hopeful for this tank just can't wait till the coils are more readily available. I'm curious how good that rebuildable coil will perform.
BTW, Sweet Vapes has the 1.8 coils in stock for $14 for the five pack.