Im not sure yet on how much cash would go along with that...I mainly use the Xterra 50 for coin and jewlery and stuff like that. I would pretty much be doing the same thing with the M-6, and i go to the beach every year so I would use it there to...I think the Xterra 50 is just a little too faulty for me, I've used it in quite a few places and it always does the same thing, seems to work fine at first, then starts saying i have signals everywhere. I've done everything possible to try and clear it up, but nothin works...and i've had it for a long while now