It has only been used maybe a half dozen times 'cause we bought the Mxt Pro. We're thinking of getting the Whites dual field PI 'cause we love MDing on the ocean beaches.... We get to enjoy the sand and water with our 3 year old son. I guess I have two questions; I definitely want a Whites machine so would the Dual field PI be a good beach/ water/ surf machine? What could I get for my Mxt 300 with the Dx-1 probe, the 12" coil that it comes with it, the Sunray Pro Gold headphones along with the ones that came with it and the 5.3 coil ? This machine is like new. I would appreciate any thoughts on this. HH Jack from NH