I run the Kanger 0.5 ohm Clapton at 25W and the Aspire Nautilus 1.8 ohm at 12W.@Spyro @Andre , I am going to try the aspire coils as my 2 testers arrived, 0.7 and 1.6 I think, the kanger Clapton needed a much higher wattage to perform well for me, so hoping. What wattage do you run the kanger Clapton at @Andre as I only had a day to play around, so not really conclusive, same for the aspire bvc coils.