You can't depend on the cheap digital boxes having an accurate temp reading. You certainly can't compare one brand to another. Even two boxes of the same brand won't necessarily read the same. There are only a handful of (expensive) digital models that will accurately display the true temp of the bowl contents during vaping. You have to find the vaping range on your particular vape-the point where you start to get vapor (a little low) and the point where the vapor process turns the herb black (too hot). Somewhere in between is where you need to be-the herb remains should be brown and your final hits shouldn't be really harsh.