"Deep" vs "General" GPX4500 in TECH TIPS, TROUBLESHOOTING, and DETECTOR HELP Posted 17 hours ago The so called loss of depth is insignificant in my opinion. You wouldn't believe how tiny some of my gold pieces are found at very good depth. Get yourself three coils....small like a sadie, a medium one like a 11" mono and a 16" to 18" . Cover the ground you hunt with all three and you will have it covered....enhanced works well in medium and hot ground..Crank up the gain and go very slow. Well thats my 2,3,4,5, bits. Good luck.