I'm about to get back into the hobby after being on the sidelines for the past 35 yrs. I live about 25 mins. from the Jersey Shore and also a stones throw from some very rich Revolutionary War sites that are still accessible. I like the CZ 21 for it's all weather, all terrain, waterproof, built like a tank attributes that would be the natural choice at the shore. I also know the CZ 3D would do a better job finding Revolutionary War era relics and coins. I would like to search both locations including old Parks and river beds. Is there a unit in the $800.00 to $1000.00 price range that can adequately handle both tasks or am I going to have to convince my wife at some point down the road that I need to spend some of our vacation money on a second unit. Thanks for your help.