Sam, the Duratrax is good enough for my use. I don't think we have any reason to desire more than ±2degC repeatability on measurements, which the Duratrax seems to offer. If my motor comes down at 58 one flight and 56 the next, I don't think "I wonder what changed?" If it comes down 56 one flight and 76 the next, I need to do some tests before I fly again. If my battery is 43 when I land, then next flight is 50, I know instantly that I have pushed the discharge depth on that second pack.