only a matter of time before somebody finds an alloy better suited to vaping.
kanthal was developed specifically to have low change in ohms with temperature.
I don't have any nichrome yet because I assumed I'd be better off without the chromium, but turns out kanthal has a lot of chromium in it and so does stainless steel.
the ijoy asolo and ijoy solo mini a supposed to do regular tc, and another mode with tc (burn protection) with any wire.
based on my observations so far,
with nickel, my resistance might double temporarily while vaping;
with kanthal, it might go up 2%. (and whether that 2% is truly due to resistivity variation of the coil alone, or other factors, is a question.)