Does this boat need Axius? No. The 3100 SE balances draft, weight, and windage. Coupled with the large blade area of twin-prop Bravo Threes, docking it conventionally was a cinch, despite a buffeting breeze. But you may want Axius. Joystick control is convenient, plus it's great to be able to move sideways around the dock. Also, as installed on my 3100 SE, you get Vessel View, a screen that displays all engine functions and diagnostics. And you get the Axius Plus control pad, a device that enables you to hold a course with the touch of a finger, sort of like a point-and-shoot autopilot. And you get DTS -- Digital Throttle and Shift -- which eliminates sticky cables and sticky shifting, and provides single-lever operation and unrivaled engine protection. All that, plus the cool factor, may be worth $20K.