I wanted to get into TC to keep the temperatures as low as I can well still giving a satisfying vape, I'm striving to make my vaping as safe as possible. One thing that I haven't yet found an answer to is the heat we draw into our lungs, is there a danger above a certain temperature? I remember hear many many years ago one of the harms from cigarettes was the heat drawn into the lungs, if my memory is correct it related to the heat transferring to the heart which rests next to the our lung. That may not be an issue, there may or may not be other health concerns with temperatures from vaping, I just don't know but I try to play it safe, well as safe as I can.
I've been vaping tanks with .15 nickle coils at 20-22 watts with the temp set 430-450. Most of the time my lite draw won't reach either those watts or temps and yet the tank will get hot, after some time the heat will transfer to the mod and the top 1/4 or so of the mod will get pretty darn warm and that bothers me. But the coils take a much longer time to gunk up then anything I have used to date, vaping two juices in two tanks and mods all day and night I get at least a week on a coil before it gunks enough to taint the flavor. It's the flavorings and additives that mainly gunk the coils, when I use to vape flavorless nic juice my coils would last much longer and they were the little kanger clearo coils I rebuilt. The gunking is another reason why I strive to keep the temps lower.
While the DNA 40 was a blessing, I feel the 200 with the settings it gives has given me the ability to make my vaping the safest it can be today, I don't think there is another board out there that can come close, none that I know of anyways. I vape so I won't smoke, I truly believe it has saved my life, I just hope we don't find one day that vaping wasn't as safe as we thought. But I'm willing to be a guinea pig for future smokers looking for a way to quit, besides, if nothing else vaping has extended my life because smoking was surely going to kill me, of that I have no doubt.