Took my quattro to the beach today for the first time. The depth with this thing is incredible. Not only did the depth impress me but the sensitivity of the 10.5 coil is also impressive. I didn't find any gold but I feel with the depth I am getting and no. of nickles I found it is just a matter of time. It is taking time to get used to the tones and what they mean but I am learning pretty fast. I don't know how well this machine performs in parks and such, but on the beach it is going to be a hard machine to beat. It is a little heaver than my mxt so I did have some tiring in my arms. I may get me one of those swingy thingy supports to help. Good luck to everyone.