Kellco has a 4" coil for 60 that has a sticker on the top and its called Magnum. Metal Detector.com has it for 40 but picture shows no decal on top and no mention of Magnum. Price on BH web site is 40 also. Beside the sticker is there a difference in the two? I have a Radio Shack version of Landstar and I really like the notch feature but I want to use this as a tot lot unit. In this case depth isnt an issue but getting tight to poles and backstops is.