Been looking at TC mods but have not decided on which one to buy (yet). Sales will be coming up (Labor Day) so I'll most likely buy one then.
From what I have gleaned, wattage is your accelerator to get you up to speed (temp). i.e. Wattage just determines how fast your coil heats up. The temp you set will determine how hot the coil stays and thereby have more effect on clouds and flavor.
With nickel (titanium too??), you don't want to get to your desired temp right away, because as soon as you do the chip will begin to dial back the power to keep you at the temperature you set. Ideally you want to climb to your set temp during your draw, possibly hitting it right towards the end. I read the DNA board has "pre-heat", so it is going to throw more watts at the coil initially then back it down to your set wattage. If doing that brings you right to your set temp then it will continue to back down and you won't be getting the best vape possible.
Pay attention to what the wattage is doing during your vape and adjust accordingly. It is a balancing act, but I read once you find the sweet spot it is a really nice vape.