The 6x10DD is not going to be the best depth but separates very well, I would get the White's D2 coil (10"DD coil) and that coil running +2 gain in relic mode I can get dimes at 10"+ with some being at a full 12" before. The detech ultimate 13" coil is a great depth coil but being big it's best on open grassy area's, it does cover more area per swing as well and still separates good for such a big coil. You can't really compare a detector with a big coil to one with a lot smaller coil, the depth is going to be very different depending on what coil you will use. The MXT should do better when you have lots of iron around, just remember to slow way down if your in heavy trash as the MXT is pretty good at picking out the good stuff and that 6x10DD will be good for extra heavy trash area's but my D2 coil stays on 95% of the time. I'm always afraid to pass up the really deep targets and that's usually the old good stuff, relic mode trigger forward is how I run mine as the relic mode trigger forward seems to be a little deeper than the coin and jewelry mode it just comes up as button or buckle instead of coins, I mostly go by sound and VDI's but once you get 8"+ or deeper I only go by sound because the VDI's are not always spot on when the detector is barely picking up the target. Those really deep whisper targets are almost always the good old deep stuff, make sure to have a real good set of headphones as with a cheap set you'll miss some of those whisper targets and make sure the threshold hum is barely audible. HH
