Hi Dobbie. I don't think you will get any machine to do a great job in all of those areas, especially the beach and prospecting areas. The rest can be covered by one machine. Many brands are good and you will probably get answers from everyone depending on what units they use. I use a DFX and love it. A bit more than your price range. But a used XLT or even a good condition Eagle spectrum would save you lots of money and would be excellent. You could even grow with them as you learn more. Also the MXT gets good reviews as a new machine. But there are Tesoros, Minelabs, etc... I do strongly recommend that you get the most expensive unit you can get for your money, even if it is used. If you are faint hearted, then buy a more user friendly machine. But I usually want to be able to get the maximum out of my machines, so I buy top of the line. I figure I can catch up to the machine when I get more acquainted with it. Also the resale value tends to stay with the higher priced machines. Just look at any E bay auction for a DFX or Minelab SE. What ever detector you choose, get a small coil as an extra if you are ever considering doing any foundations or standing houses. It can sneak out more targets amongst trash than the standard coil. Can't wait to see the other opinions. This is a hot topic you know. Good luck and HH.