See this test and you will know how to choose a pinpointer and what things should be checked while buying this one. Here’s a comparison between the Garrett Pro-Pointer AT, White’s TRX and Deteknix XPointer Wader: testing on gold targets. Let’s have a look at how different probes can see a small nugget, a bigger one, and how they react to a gold chain.
All about pinpointers is collected here and on Knowledgebase pages, in the pinpointers section. There you can find information about each of the models, namely specs, comparisons, different tests (including the ones on gold).