I received the 800 yesterday (Saturday), did the update, took it "for a walk in a park on Sunday." UNBELIEVABLE! In 15 minutes I found a quarter, 2 dimes, a nickel, 3 pennies, a Wheatie, a silver ear ring, and then, AND THEN, a 25.3 gram 10k gold ring. HUGE. Value on the net says it's worth 620 dollars. UNFREAKINGBELIEVABLE. In 15 minutes it paid for 2 thirds of its cost. The largest ring by far in 20 years of detecting.