I'm thinking of getting a p.i. detector for the surf and wet sand at the beach. Price wise I've narrowed it down to the Tesoro sand shark and the garret sea hunter2. I like tesoro's warranty, life time. garrets i think is 2 or 3 yrs. Please give me the pros's and con's of these two machines, I have detectors for the dry sand. and yes i have to keep the price between $550. to $650.