I have a Beachhunter ID 300, and I really like it.
Much more reliable than the Minelab Excalibur I have, and easier to use.
And the price is quite a bit less than $1,000.
The 12" coil does a great job of finding deep targets, and the tones and lights makes it easier to know what you've found before you start digging.
The coil is not weighted, which means when you are in the water you have to hold it down - but I've spent hours with it in the water and didn't notice it until it was mentioned here.
When I hunt, I set the Beachhunter to all metal mode, and check the lights when I get a tone. If it shows coins or rings, I dig.
I've used it on dry sand, wet sand, and in the salt water for many, many hours, and have found many great targets.
It is heavy, so plan on belt mounting it.
Bill