My whites 6000 di series 2 has a vdi which I rarely use except for depth. I depend on the sounds and after some experience you'll understand the various blips, screeches and what-nots.
Sure, I dig a fair amount of junk...but..you read enough posts to discover that treasures lie UNDER some junk.
A good example, I was demonstrating detector use to some folk at a church picnic and got a typical pulltab crackle.
Just to prove to them it was a pulltab, I dug it. It was a 1964 AND a 1965 quarter, side-by-side at the base of a tree..
I told them that's why I dig everything...
They were fairly shallow so I think even a detector with the modern VDI's would have got some kind of erratic signal when you could only swing the detector one way because the tree was there.
I had a 6000di pro years back, (sorry I got rid of it)..but the capabilities wern't much different than that of the series 2, even tho it had the better vdi. I still like "hearing" what I'm finding.
Al