Had the MXT for 2 yrs and a GTI 1500 for about as long. Currently, I have a GTI 2000, which is basically a GTI 2500 sans stickers & backlight. From what I've seen, there's not much difference depth-wise between the 2. The GTI's won't get the really small low conductors like the MXT will, but the reverse is true of the high conductors. The Disc. mode seems to run a bit smoother with the GTI and the imaging does work. Yeah, it won't work to full depth, but the detector does let you know that something is too deep or small to image. All the other tricks a person can use for shaping a target in AM still work with the GTI. Having the continuous imaging grid on while detecting is pretty cool & informative. Both detectors will ID in AM mode, with the added benefit of depth & size with the GTI. The AM mode on the MXT is much more flexible than the HTI, though the GTI is no slouch. For coin/ring hunting (and possibly relic), I'd take the GTI 2500 over the MXT in a heartbeat. The tone ID and full range notch, plus real time depth & size, make for an almost unbeatable package in the right hands. I also find that, when the coil is switched over to non-imaging, the detector "speeds up" significantly, which makes sense since there's less information to process. Changing over to prospecting, on the other hand, the MXT will deliver a royal whupping to the GTI. This makes sense 'cause the electronics platform that the MXT is built on is that of the GMT.. a hard-core nuggethunting detector. It just has a lower frequency & more bells & whistles. That's not to say that the GTI can't be used to prospect, it will pick up a 3 grain or less nugget, it just can't pick up the tiny low conductors that the MXT will. The ground handling on the MXT is also better, being designed for some pretty nasty mineralization, it just has more tools in the chest for dealing with said ground. What it comes down to is what you plan on doing & where. ...Willy. BTW. These are my experiences in my hunting grounds, others can (and probably will) differ in what they've experienced.