I met a man the the other day who had an excalibur detector. He has been at this a long time. He said he picks up everything because you can never know for sure. He said once it sounded like a bottle cap and he picked it up any way and it was a ring. I was going to get an excalibur to avoid bottle caps but this man was an old timer at this so I'm going to keep my whites beach hunter for now that I recently got and continue to pick up everything. Any comments?