The Hummer 587 ci, di, gps has been on sale for about $450 but I really don't have the extra $ to buy one even though I need one. It's able to run the Navatronics package and has it's own internal gps I do believe. I've got a buddy who's getting one for his little crappie boat. Course he's got a big bass boat with 2 of the $1500 versions on front and back so $ isn't a problem for him.

