I'm really excited about the AT MAX. I just bought the AT Pro only 4 months ago and I've found $130+.
What I like about the AT max is the wireless which is $127 to upgrade for the AT Pro. Additionally the giant display screen and backlit. I'm always metal detecting at night using a head lamp and I have a hard time seeing the screen.
Also everytime I go to the beach, I get interference (Southern California). I ground balance it but it still goes a bit crazy. If it worked better at the beach, I'd love that.
My only concern now is my coil. I bought a Nel Snake for $130 for AT Pro. I wonder if it would work ok with the AT MAx.