Now I don't have a test garden, and I not a big fan of air test but they do have some good points, I go for actual finds with the depth you can measure. One farm come to mind about a mile from my house, it was built in 1827 and it was lived in till 1976 when the last owner died and left it the town, and its been hit real hard and not buy me, I finally worked when I got my F-75 LTD, being the depth was supposed to open up old worked out places, not knocking the F-75 but it only brought up 1 1853 Large Cent at 6"s,which didn't impress me much since these fields were all plow fields, no heavy iron only a few hob nails. After a while I decided to go back with my 1270 and my 10.5 coil, Primary search mode was Iron Disc.@ 9, Sen max, Secondary Mode Disc 4, Sen. MAX, using Sun-Ray Gold Pro headphones, I was getting a few relics, small horse buckles, after about an hour and a half bang IH 1888 @7"s, soil was a little damp so I thought that was pretty good. In the next 2 hours i pulled up 2 King George Coppers, 1 @ 9"s the other about 10' away @ 11"s, 1 was 1826 the other was 18??. I was in heaven. 2 days later in the same field, recovered 2 1796 New Jersey Copper Pennies again about 11"s. The 1270 is a deep seeking detector. I've found so many good coin and jewelry with the 1270 I brought it back as my #1 detector and the F-75 as second. It is a super stable machine, not like the erratic, unstable F75, there's a lot of places here in Northern NJ the F75 runs like crap.And the 1270 is unbelievably deep seeking in lake beaches and wet drained lake and river beds. This year alone between the 1270 and my old 555-D the little beach i've been doing has yielded a slue of gold ring and silver coins and jewelry where the F-75 was useless. You can search for Shooters posts to see the pic's. this is getting to be a book so I'll stop for now. Great machine......................