I'm finally getting my boat in the water and wanted to ask the forum members what they recommend for a good Bottom machine. Seems there is quite a number of options. My budget is $1500, naturally if something way cheaper will work, that would be fine but I want to make sure that what I get will perform in all the coastal waters of Alaska. How much power do I need? What features are important to have? What features are a waste of time? Can GPS, Charting, and fish finding be in a single unit? Thanks for the help. I know everyone out there has more experience than me so go easy!