To put in the simplest terms I can think of, Analog is a continuous signal and digital is discreet, its either on or its off. I don't think one is better than the other, they're just different. However, I'm fairly certain that a trained ear with an Analog type detector could pick up just the whisper of a signal that interrupted the threshold and the digital one wouldn't register because it wasn't enough to activate the detectors "on" part of the signal. Threshold on a digital machine doesn't work the same way as it does on an Analog machine. But, it would take years to get that good. On the other hand, digital detectors are lighter because it doesn't take as much in the electronics department. Like I said, for the most part they're just different. And, again it all boils down to what machine you dedicate yourself to learning and putting the time in with, as to how good you get. The keys to being the best at this are 1) research- gotta have a good site with plenty of potential or the best detector in the world isn't going to help you out. 2) Knowing your machine, really knowing it and what the different sounds mean. 3) Permission to hunt your site. Its no fun constantly looking over your shoulder and worrying about getting caught. If you have these three things I predict a successful time in the field. Lastly, don't forget safety, remember an ounce of prevention is worth a pound of cure.