I have the aspire nautilus and been using the 1.8 ohm bvc coils, I don't know if it's just me, but they don't last very long, probably 1,000 small-medium hits. My husband uses the Kanger Pro tank 3 and their coils are supposed to have a shorter life span than the aspire, but his seems to last way longer. I start to not even taste the flavors anymore in mine.