It is important to mention here at the very beginning that there might not be any best metal detector in absolute terms rather it depends all on your needs and requirements. In other words, do not look for best detectors in the market because you will just end up more confused and puzzled. A better idea would be to first identify your need and features you cannot live without in a metal detector. It is also worth mentioning here at this point there are basically five categories of metal detectors.
For instance, one might need a metal detector for a very general purpose like finding a coin or something. In addition, it is also frequently used in gold hunting. Similarly, it is also used on salt beaches and sometimes underwater as well. Fourthly, people also use it for finding cache. Last but not the least we are all aware of its usage for security purposes on different places. In light of this discussion, it is imperative to buy the right and subsequently the best metal detector for whatever purpose you want to use it. So far as the companies are concerned, you could search them online.