Merv

Ninety percent of my detecting is 'gold jewelry' hunting on dry sand beaches in florida. Is there an advantage/disadvantage in choosing a 'vlf' detector in the 17-20 khz range as opposed to other frequencies to accomplish the above? I realize most detectors will find gold jewelry but i'm wondering if specific frequencies have an advantage. I'm only interested in digging a maximum of 7".

I'm leery about purchasing a new on the market detector. I'll wait & see if all the bugs are worked out first & the reviews of first time buyers. I wonder if anybody would actually admit that they were sorry for purchaing a new detector?