I've been using the v4 on all metal mode and digging everything. However I would like to know if anyone has a VID chart that they wouldn't mind posting? I'm looking for something that gives me a visual to go by that will give me an idea of what is in the ground before I dig. I know everybody says to go by sound but the time ranger only has 3 tones I believe, I have learned to dig the high tones when in disc mode but I think if I had a chart to look at and corespond with the numbers I could learn my machine a little better. An example of what I'm looking for is Aluminum can 35. Etc.... these are just random examples and not my experiences. Thanks and any advice is greatly appreciated.