I've been getting interested in looking or gold , I'm looking into a Gold cube , in the NC area , would you recommend a 3 or 4 tray cube ? What are the advantages or disadvantages to the 3 or 4 tray systems ? Would you run material thru a sluice before the cube or could you just run the material thru a sifter ? I'm thinking of getting one of those sucker tubes to just hit a few areas around some creeks and then take the material home to run it thru the cube . Thanks for any info you could give .