I am purchasing a claim on the North Forks of the Salmon River in northern CA (Siskiyou County). When not dredging I will be detecting for gold nuggets. This will be only my second detector (First is a White's XLT). It will be used exclusively for gold nugget hunting on this claim. I am considering the MineLab 4500 or the new White's PI. I am aware of the cost difference but if the more expensive unit will find more gold then I have no problem paying the extra money. Any suggestions are greatly appreciated. I am truly a "newbie' at detecting even though I do have the XLT. With a new detector would there be any reason to take the XLT with me or just leave it at home for relic hunting? This is only my second post so I am counting on all of the seasoned pros to help me out. Thanks.