Stick with the major brands, Garrett,Fisher, Minelab,Tesoro, Whites. As far as the features it depends on what suits you best, what is great for one person may not be for you. Do you like to tinker with adjustments and different programs, or do you like to keep things simple? Also where you are going to search makes a big difference, beach, schoolyards, ghost towns etc. The standard answer for a beginner seems to be Garrett Ace 250, but this is not for everybody, everyplace. Best bet is talk to a multi line dealer and discuss your needs, or at least give us a little more info. Take your time, this is a great hobby and a lot of fun, but it can be frustrating if you get a detector that doesn't suit you.