FIRST TIME BOAT BUYER LOOKING AT TWO BOATS. ONE HAS A 130HP 4 STROKE HONDA THE OTHER HAS 6 CYLINDER MERCRUISER I/O. WHICH OF THESE WILL GIVE THE BEST FUEL ECONOMY. I WILL BE IN THE SALT WATER MOST OF TIME. WILL ONE BE BETTER THAN THE OTHER IN THE LONG TERM? THIS BOARD IS A GREAT HELP. <br /><br /> THANKS...........