Disappointing is one word.
I've had over 100 TC coils through/in my tanks (mostly gifted) and they are mostly useless. The only conclusion I can draw is you can only really set the watts to about the same as the Kanthal versions. The idea that the manufacturers can 'uprate' them is crazy. You might try running a 20w coil at 40w (trusting in the TC) but then you get a reverse vape. It hits hard for a second (literally) then cuts you down. The opposite is true of usual vaping. If you can bear it, it's great for coil life and peace of mind. Personally, I call it junk gimmicks.
However, throw some TC wire on a rebuildable and you might just get vaping nirvana. Great taste, no dry hits.![]()
With my Melo 2 and all the other tanks we have at my house that takes the same coil cartridges, we've never had issues with NI coils.. but I did start to rebuild them as they didn't last long with the store liquids (until I started DIY)....