I hunt a area loaded with hot rocks with the 6000, the 11" see's targets every where. I can tame it down and make it work but I have to listen carefully. If I put the 14" DD on, most of the hot rocks disappear and find it more comfortable to listen to and not as tiring mentally. The sensitivity to small gold is amazing having found gold down to 11/2 grains as I can run this coil at maximum sensitivity. I do find that only the left side of the coil will signal gold even to the edge of the coil, so I use left side up against rocks etc. Not sure how each would perform at depth, but depth isn't a issue in this spot. Any comments would be appreciated.