Too many questions to answer. What's your budget?,you don't need the biggest and the best to start out on. Time available to hunt, a couple hours a month or 3 or 4 times a week, this will also determine how fast you learn your machine. What do you want to hunt?. Coins in the park, civil war artifacts, gold nuggets, underwater items (at the beach or creeks and rivers swimming holes) Where do you intend to hunt? City parks where there will be a lot of "trash" you'll need to discriminate out or out in the country, How electronically inclined are you?, Some machines have a pretty good learning curve to learn what all they will do. Will the machine ever get wet? Back to the point of searching at the beach or the local swimming hole. The list goes on. A short answer would be to buy any of the lower mid line machines for any of the major manufacturers. they will get you started, You can always upgrade down the road and use the lower end unit as a spare. I have a ATGold and a ACE350 as my backup.