I joined the forum today after coming here to see if anyone else was having issues with the Nautilus Aspire. Turns out lots and lots of posts of coil issues, burnt taste, etc. I had mine for less than 3 weeks and went through a lot coils, which to me is expensive and not acceptable. I've also read I can mod the coils, but why should I have to. They should work correctly to begin with. I had visited my vapor store several times and was advised to turned the voltage down, use a smaller air hole, clean the coils, all to no avail.
So three days ago I gave up. It just wasn't worth the aggravation and I wound up getting the brand new Kangertech Mega. I can't say enough great things about the Kanger. The vapor is bigger, I mean amazingly bigger! The coil is lasting. There is no burnt flavor. And I love how on the Kanger, the air hole is infinitely variable, as opposed to the Aspire's 4 - hope you can find one you like system.
I've read they are introducing a modified coil and maybe I'll give it a try on Aspire, but to be honest, the Kanger is simply miles better in my opinion. I prefer something works with minimal fuss and the Kanger does just that.
The only issue with the Kanger Mega is it does not hold as much juice as the Aspire. It still holds more than the regular Kangers as well as most other systems. And when you fill it upside down the tank is full, but when you turn it right side up, it looks half empty. The reality is there is a lot of juice not visible as it's hidden beneath part of the stainless tank. So far, a tank is lasting all day and then some and that's really all I wanted to begin with.