I have used a lot of detectors and even used an XT 50 for a week or two,but I told my brother he had me stumped.They are both great detectors for coins but I don't have enough experience to make a good choice.His primary use for a metal detector would be park hunting with medium to heavy trash.Again if it was up to me I would flip a coin.
I know I'm going to get yelled at but the Whites m6 is a better all around detector in my opinion,i own an x-Terra 50 and i have never been too happy with it. It has been back to Minelab twice,it's Just the overall performance is not impressive to me. The m6 is a little heavier but more stable and the signals don't bounce as much. Just my two cent's worth, maybe I'm just being negative today with the ground frozen here in Michigan the winter blues i guess. HH. Tim