I am new to metal detecting. Started about a month ago. I have a Garrett AT Pro and an E-Trac. Both great machines. I have found bunches of modern coins and find this hobby to be quite addicting. I do parks and fresh water beaches with an occasional volley ball court thrown in. (Gotta love the volley ball courts.....coins coins). Every time I go, however, I try to imagine what coin hunting would be like with a machine like the ones I'm using BEFORE aluminum soda bottle caps, pull tabs, and aluminum cans. There fruggin everywhere.... Makes for lots of extra digging...