My latest MOD + Tank, the MOD is a Joyetech Cuboid 150W and the Tank is the Uwell Crown with the 0.5 Coil @ 44w .. this has been the best combo I have tested so far, great flavour and awesome battery life as the MOD takes two batteries while keeping a small size profile.
I tested the 0.25 coil at around 65-70w, but for my taste it is a bit hot, plus it drinks liquid like hell, I will give it a go at a later stage, but for now it’s the 0.5 for me, I am still to try the TC 0.15 one.