I am thinking of buying a ace 250.Can you manually ground balance or does it come already ground balanced. If you cant manually ground balance does it work good in Georgia soil? Is it a good detector,easy to use,will it go pretty deep? I would mostly use it at old home sites and the local park. I dont want to spend over 300.00. I saw at kellyco you could get a package with a extra coil and some free accessories for around this price. Thanks for your help. Robert