Mx5, my take. I have used this detector for about 45 hours this summer and it is a very impressive detector for the price. Depth is much talked about, but in some cases it is neccesary to get to the "goods". In my area, it seems that the majortity of the silver coinage is around 8 inches deep. I have used many detectors that I found loads of coins with, but not much silver. I do not have that problem with the Mx5. I am finding coins extremely deep, up to 10 inches! But, it is more than a depth monster. I have found it to be extemely accurate. Some have complained of being a "jumpy" detector on nickel type targets, but I have found it to be very accurate. Most Whites detector have a universal numbering system with a nickel being around "20". If the target is jumping from 20 to 22-24, it is most of the time junk. If it is in the 16 to 20 range, there will be a good chance of a nickel surfacing. I use a SEF 10x12 dd coil on my MX5 and it is accurate and deep. I prefer dd coils, but there is an exception to my thinking. Where there is exteme trash, I use a 5.3 Eclipse coil. I could use this coil all the time on my MX5. It goes deep and wades through the trash exceptionally well. If I was not concerned with covering ground, I would leave this coil on the detector all the time. In my opinion, it will perform on par with the stock 9 inch concentric, but you will lose ground coverage. One last thought on the MX5. It is sort of rare for any mid range detector to have a threshold in discriminate mode. I prefer to hear the threshold on any detector I use, but you will not find the MX5 to have a "buttery smooth" threshold. It pops and sputters constantly. I was initially was bothered by this and actually thought the detector was defective, but is just the "nature of the beast". All in all, I like my MX5 better than it's main competitor, the AT Pro. Great battery life, great ergonomics, responsive, and deep. At this time, I feel I can keep up with just about any detector out there in the places I hunt.