And what sort of budget do you have and how serious are you about hunting for gold.
If money was no object, you buy a Minelab gold detector that are made just for hunting gold.
If it's a hobby thing and you would like to do some coinshooting and relic hunting a Tesoro Lob ST will do the job.
I had a White's MXT and would only find a 1/8" gold nugget air testing about 3"
Some vintage Fisher 550d and Garrett Groundhog VLF/TR detectors with a small coil I had would air test in VLF about 4-5"
Most detectors I have owned over the years would only pick up (air testing) the 1/8" gold in all metal
no more than 3-5"
Throw in mineralized ground and you may not even pick up the nugget more than 1" deep.
I also had the Garrett Gold Scorpion and Fisher Gold Bug II, not impressed, sold the Garrett soon after I got it.
The Gold Bug I put in about 30 hours at various beaches hunting for man-made micro gold. Didn't find any, just piles
of aluminum foil and man will it locate the tiniest pcs. of foil I ever saw.
Check out these links:
Nugget Hunting
MORE LINKS
Good luck with your quest for a gold detector.