I'm in the same situation as you. Need to replace the old Minn Kota All-Terrain. I've had Motor Guides and Minn Kotas and I'm convinced the MK's are quieter (essential for "pushing" or "Spider rigging".) I hear the Terrova with AutoPilot is the way to go for trolling, so that is what I'm looking for. The built-in US2 puck won't work with either of my depth finders so I will have to tie-wrap the old transducer on (but can't attach that to the shaft due to the way it deploys & stows.) The co-pilot feature can always be added later if you want to go wireless. So my suggestion is buy one of the new Minn Kota Terrova's, 24V, 80#, with autopilot. Only don't bid against me on ebay. LOL. Good luck. The TM is a significant investment and can make or break your fishing success.