Thanks for the post on settings. I recently upgraded from a gpx-4500 to a gpx-5000 and also purchased a Coiltek 14"x24" coil. I just got back last night from a 2-day trip to Gold Basin and found my first find EVER - a 140 gram meteor which was around 4-6 inches deep. To say I was excited is an understatement. I bought my first detector about 10-years ago which was a Minelab sd2200 and I have only been out maybe once or twice a year. I was using the default settings which worked great on the gpx-5000. The coil was out of this world. I was digging targets 18-24" deep. Most were small (very small) pieces of tin but I was amazed at the depth of this coil combined with the default settings of the gpx-5000. I was concerned about sensitivity with using such a large coil but it was fantastic. The only obvious problem was pinpointing with such a large coil. I was recording most of my digs but forgot to turn on my gopro cam when I was digging the meteorite. I do however have some pics which I will be posting later today at my blog; http://jrjackson.com J.R.