I'll admit, I missed that part. In another post I made the comment that "you need a Multi-freq. machine for wet salt beaches" and someone messaged me and mentioned that the AT-pro will work in wet salt if set right, which is true, most detectors will, but you lost so much depth and performance by the time you adjust the settings to stabilize it, that it's useless for most targets of average depth. If you plan to do a lot of salt beach hunting and don't buy the proper equipment, you will be wasting a lot of time and missing a lot of finds. Anyway below are the detectors I'd try to find in the $500 or less range, in the order I'd prefer if I wanted to beach hunt as well as land hunt.
1. Fisher CZ (5,7a,7a-pro,70)
2. Whites DFX
3. Minelab Explorer 2/se
4. Minelab Sovereign XS