Hi, I have not been detecting for years now, but in the 80's I purchased a Garrett Groundhog new and really enjoyed it. Lots of good finds etc. I am finding the "bug" is coming back and I am wondering. Is my old Garrett Groundhog still a good dectector to use or should I upgrade to a AT Pro or something?? Is it worth upgrading? I am hoping some of you might have started with a groundhog and have upgraded to the new AT pro so you can tell me about it. I am really thinking I should upgrade but have until spring to decide. Thank you in advance for your help. Also if this has been addressed on this forum already please send me the link.