Hello Dignit.l know some of good detectorists who disagree with me about the 5000, some who agree.The area and type of ground does have an impact on how you will find each detector.The GPX 5000 was not backward compatable with a lot of the earlier coils,it was noisy or a poor performer with them.lt was a lot more susceptible to emi interference, planes motor bikes thunder storms.l found that the 5000 needed to be ground balanced a lot more. The 5000 did have a very good enhance mode.Fine gold was not much use in the spots l detected.The 4500 had better depth on 1.5 gram pieces up to 4 grams.The 5000 was a bit better on depth on pieces under 1.5 grams.The 4500 is a lot easier and forgiving detector to use all round.Especially for a new operator.