I see you've crossed off Garrett's but the only one I see on you list is the ACE 250. That's a great machine for the price, but look at the 1500 or 2500 with imaging.
Or, as indicated earlier, the 1350 with profiling. You might find them addicting. The 2500 is the ONLY Garrett with true ALL METAL mode, so I've been told. They have a 9.5 and a 12.5 inch imaging coil available for the 1500 and 2500, no other imaging coils that I'm aware of. The 1350 appears to use a timed analysis to determine the size of the target. The imaging coils have three internal coils I believe.
Best of luck!
Or, as indicated earlier, the 1350 with profiling. You might find them addicting. The 2500 is the ONLY Garrett with true ALL METAL mode, so I've been told. They have a 9.5 and a 12.5 inch imaging coil available for the 1500 and 2500, no other imaging coils that I'm aware of. The 1350 appears to use a timed analysis to determine the size of the target. The imaging coils have three internal coils I believe.
Best of luck!