I know of an elderly gentleman now well over eighty that still uses one of these & he has had it a very long time. They are fantastic water proof machine , He has found thousand of $ worth of jewelery.
They are PI which will find deeper targets than VLF in general.
They don't discriminate which means you will dig rubbish but this is not a disadvantage if you learn how to follow rubbish. light rubbish leads to heavier rubbish. It's a bit like gold alluvial leads to reef.
I think they are great value for money. I also know someone who had Garrett Infinium & has sold it, now with regret.
Both these PI machanes are certainly better in wet sand & in my opinion unbeatable. That is what they where designed to do.
However if you aren't getting your feet wet then get one that can discriminate.