well.....
the ramp time is crazy short, even at low wattage. I'm vaping mine at 25 watts, even though it's recommended at 40 watts. I like a cool vape. it has a LOT of surface area but is extremely thin. This is NOT a coil you'd want to hit with a lot of power; it's almost like a stainless steel foil. It's less than half the thickness of kanthal ribbon.
wicking is easy, but a scottish roll is CRITICAL. it's got to be stuffed tight or it will dry hit. cotton doesn't catch on anything.
It gunks up quickly, but taste is nice and clean before it's gunked up. I vape Strawberry Circus and gunking is always an issue with this juice. I like SS316 but it gets very dirty very quickly, which is why I don't use this metal much.
cleaning: dry burning kind of works, but it leaves a very weird and bad tasting residue, almost like rust. I just pull the coil and manually clean it with fine sandpaper and a wire brush for the inside.
despite rewicking every other day (the wick is fine, it's the coil that needs cleaning), and the fact that I can run the tank dry in minutes, I can't seem to put down my Theorem. So they did something right with it. Even if the performance was subpar, which is isn't, the design is elegant and innovative. What's very strange is that despite no seal between the tank and upper deck, it doesn't leak. Water probably would, but max VG's viscosity probably makes this simple design work.
If they were in the same price range as the other pre-made coils that are out now (like this one 
