I got a black Nautilus 2 I'm still using the .7 coil at between 18 and 23 watts using .6mg 70/30.
Vaping wise for MTL it's a nice vape good flavour.
However theres a few things I really don't like and theres a few things I really love.
So the airflow adjustment is excellent it gives you almost infinite control over the airflow I generally go with 3.5 holes open.
Filling the tank is not as easy as it should be and imo was not very well thought out, I think they sacrificed usability for looks.
To open the tank it can be very difficult there is no knurling on the bottom airflow ring it's very slippery to open and the tank is stiff for the first compete 2 turns, it's not like some threads were once you break the initial bit it can spin easily. the nautilus 2 is tight for at least 2 full turns.
Ive had to use a vape band on the air flow section in order to get enough grip to open it.
Anyone with any diminished capabilities in there hands, arthritis or doesn't have allot of squeeze or hand strength will struggle with this tank.
Iv'e also had an issue when closing the tank because the last couple of turns are so stiff that when it came time to take the N2 off my Mod it was stuck tight on to my Smok AL85 because I had to twist it so hard to close the tank, and again this took me 30mins to get it off my AL85 eventually having to break down the tank putting the vape band on eventually I managed to get it off my mod.
These problems can be avoided by modifying your approach somewhat, but it makes the whole process more difficult than it should be.
When you do get the top off and you want to fill this can cause more issues, unlike the Cleito coils for example where the threads are at the top and the coil protrudes from the top of the glass.
The Nautilus 2 has a coil that is shorter and is below the top of the galss and the threads are not at the top of the coil there is a section of knurling at the top under that are the threads.
I have found if you fill your tank up to the knurling you will get some leaking,
The best I've been able to do is to fill the tank half way up the threads doing this I don't get leaking but thats only half filling the tank.
So all in all I think when it comes to actually vaping it gives you a nice vape, but filling the Nautilus 2 and dealing with all the difficulties puts me off especially because you cant even fill the tank up to the top like the Cleito for example.
The Nautilus 2 does take the Triton Mini coils so again from the actual vape standpoint it gives you plenty of options and a nice vape.
I just wish Aspire worried a little bit more about usability and a little less about how it looks.