took the Fisher F 70 to do a bit of hunting around the Seattle area. My buddy Arnie, asked if he could come along....he has been using the Garrett AT Pro, he is an experienced Th'er with about 25 years of experience and has the AT PRO figured out quite well. Things got ugly when we decided to do side by side comparisons on signal responses. The F 70 was better at rejecting rusty bottle caps......had a less fluttery audio, hit hard and loud. It clearly picked out targets with much greater speed . The target id numbers were more stable as well. We went to three different parks, as well as by the waterfront on a damp saltwater beach.Here the At Pro had a slightly better audio but... not as good a depth!!I I like the idea of a waterproof unit but not at the expense of performance. In the last hour he asked to use the machine so we traded...Geez had to pry it out of his hands. He has contacted a dealer and had worked out a trade arrangement towards a new F70.The point of the trip was not to one-up him, or try to make him unhappy with his machine , but that's how things turned out. I suggested the F75 but he likes the F70's ease of use.Arnie said the At Pro is good but in total, when everything is taken into account Arnie felt that the F 70 was superior. Good news for Fisher I guess.