Relatively new to the hobby, Mxt or At pro or any other suggestions?

Im pretty new to the hobby, i collect us coins and currency. So i was talking about getting a metal detector, but wanted a higher end machine because i hate having to upgrade things or be turned off by something because of quality. So for Christmas my parents got me a Bounty Hunter Quick Draw 2. Im glad i got it because it would of been a while until i bought a nicer machine and it suprised me how fast i got into this hobby and how much i enjoyed it. I go out every time i get a chance, but now im starting to outgrow this machine. It doesnt have a pinpoint option so its hard to not dig big holes. So anyways, i was stuck on a Whites M6 but then decided i might do some relic hunting since im from Philadelphia PA and theres alot of history around here. So then i made up my mind on a mxt or mxt pro. Then i started reading up on the At pro after getting my Garret propointer which i absolutely love. My family has a place down the beach in NJ, and me and my friends go tubing on a river near where a battle during the revolutionary war took place so i like the fact that the at pro is somewhat waterproof. I know there has been tons of threads on this, but i dont want to buy the at pro and wish i would of went with whites. I could always buy a fully waterproof machine down the road. Im just looking for suggestions from you guys with years of experience because i dont really have any dealers around here, only for whites. Let me know what you guys think. Thanks