It will be my first metal detector. I'll use it at Connecticut and Florida beaches as well as at parks ect. . The soil where i live is generally at least somewhat sandy. The DFX looks great, but I am not that smart or patient. The MXT and the MXT 300 have different coils sizes and styles. Everyone seems to like the XLT. I am getting a little info from the local hobby shop, but I feel like I am being sold what is in stock as opposed to what would be best for me. I just bought my son the Prism (he is 10). Thanks in advance for all who can help!