My old Garrett still works to. I have just kind of lost faith in it after looking at videos of the newer machines. I was going to stay with a Garrett at first until I watched a video of the At max in action. The annoying buzzing sound reminded of a cheap Radio Shack detector I first started out with. Loved the tone of the old Groundhog as it was easy for me to tell the difference in them. Even bought a larger coil, 12 inch I think for it. Never found much with it tho.
I also see videos that show depth on these new detectors aka bench tests and plants in the ground that sure seem to be lots deeper than I ever remember the Groundhog going. Also the auto setting on it would kind of drive you nuts. Used it most in the VLF mode and manual on the other mode, not remembering what it was without looking at it. Hoping to get away from that with a new machine.
Have not seen much about the Garrett GTI 2500, anyone have any info on that???