Hi, I have been detecting for about 6 years the last 4 with a MXT which is a great machine, I have always been interested in the quattro but people were complaining about the delay so I waited and I am on my second day with the new machine and I cannot believe the difference!! I thought that 8-9 inches with the MXT was impressive but I just dug up a quarter 13-15 inches, every site that I thought hunted out is open again!! I got a lot of great tips from this forum that allowed me to hit the ground running. Thanks