The GPX5000 can be used as a good coin/relic machine around suburbia. My coil choice would not be a mono coil for this purpose. The very fact that the minelab GP and GPX have Cancel mode (using DD coils) in my opinion makes them a better choice for detecting in suburbia. This the Infinium and whites TDI fail with in around towns. They will warble there guts out. The minelab GP, GPX series with DD coil in cancel mode will purr like a kitten around town. Another feature of the GPX series over the GP series is the ability to invert the signal and adjust gain and stabiliser controls, this is a powerful feature for the coin/relic hunter.
All though the TDI is a good detector for its price range and is a versatile machine. It does not come close to the GPX for Gold hunting or Coin/relic hunting and this includes hunting in and around suburbia. I don,t believe people are unlocking the true potential of their GP and GPX detectors for this purpose.