Jwheeler, I am guessing you are talking about the gauge, so I would have to say that the digital ones are much much better. When your doing a 100 MPH the last thing you want to be doing is trying to see where that very small needle is sitting, when you can just glance and see a number. and I find the old analog ones to be very slow. I am running an Avenger III on my Cat and my brother runs an Aveng. II on his 600. So far we haven't had one problem, and no burn downs(and we always run the 600 just under 1200, so they must be pretty accurate) The guys that run the Digitron ones have had good luck with those too(and you get clamp on probes when you buy digitron).