I've had it out for a 6 hr. trial. I have the good fortune to live in a 1760's house, formally a tobacco plantation, with a Union camp, 10 feet out the side door ( I'M sure the original occupants weren't happy with the blue coats out the back). I am coming off the Explorer I XS, so I'M using that as a comparison. I really like it. Depth is comparable to the explorer. Setup is much easier and user friendly. I found that 200 year old square-head nails are in the 37-40 range, frustrating but similar to the explorer. I never used the digital setting in the XS, but wish I had, I like it better then a bouncing cursor. It seems to lock on signals better. I also tired a WOT with it, and found a double gilded revolutionary era button with it at 18", in areas I went over with the explorer. Don't know how it got there, but also found an 1853 Chinese coin at 10 inches...another mystery. Not all the stuff in the explorer, but for me it's great, easier to setup,discriminate and save. Wish it had a back light, but hey, a set of reading glasses and a penlight work too.
It's a good machine, I found that many of the explorer functions that I never used, are easier to use on the Quattro. I hate tweaking, so this machine works well for me. Money wasn't an issue, but ease of use was. works for me.