I've posted this before, but here it is again. IMHO it is very worthwhile for a beginner to start with a beep and dig detector, even a single tone model which is what most Tesoros are. Once, you've put in enough hours on the machine along with learning to thumb the discrimination, you'll be able to predict whether a target is junk or likely a coin. The difference in sound is very subtle, but it's there. Once that is learned, adding a machine with a screen can be helpful as it adds more information to the decision to dig or not. The main problem with screens is due to the fact that it's a machine's guess, good targets that might be retrieved other wise may be passed up due to TOO MUCH RELIANCE on the screen when it is in error. I'm NOT saying a screen is of no use, in fact 4 of my detectors have screens. They have their place, but are not the end all to detecting IMO.
luvsdux