I'm a long time shallow water/land hunter.i run a Sovereign GT on the beach .just sold my CZ21 and would like to try a PI for waste deep salt water.the only PI iv used was a Garrett Sea Hunter back in the 60's.it did well and gave me a good look at how they work diff from a VLF.i know you have little to no discrimination with a PI .id like a few of your personal ideas as to which one on todays market is better and why? I'm thinking Whites PI Pro,Tesoro Sand Shark? think the Infinium is a bit high price for me. thanks!