I used to have an AP, and then installed the CoPilot a year later. I have now put on a Maxxum 74#. I liked the concept of the co-pilot, but found it to slow to respond to the type of fishing I do the most (river fishing). I did, however, LOVE it up on Mille Lacs this last fall. Very easy to slow troll cranks with, and still remain behind the console. If you mainly lake fish, it is great. For rivers, especially in a good current, it can be a bit hard to control and fish at the same time.
Like I said, no complaints for the co-pilot, just didn’t suit my type of fishing. Plus, the foot pedal that the AP’s come with are the same as the PD. Those things are junk, IMHO. Mine pretty much was useless after 1 year.