The manufacturers decided that every vape
mod has to have TC, even if it is cheesy and weather-dependant with only 3 digits of resolution for resistance reading.
But the vapers who do TC regularly, have an ML, a Q or a Dani.
The non-TC mods are among the most sold according to a friend who has a vape shop; the best sellers, mostly to vapers who do not frequent vape forums or social groups, and do not buy online, are: the Innokin Cool-fire 40 Watt, followed by I Stick 20 and 30 W, rigorously non-TC. Can't vouch, but I tend to believe the info.