Here's the deal.
The wrist control with the co-pilot is very very nice. After a while of using it you will be able to control your boat fom any position by feel, the controls are always exactly where you expect them to be (on your wrist). You can also get a second co-pilot so each one of you could control the boat if need be from your wrist. The remote for the i-pilot is to big to put on your wrist comfortably. Most use a lanyard around their neck which means it will be flopping around every time you move an you will have to look to make sure it's facing up before you can push buttons. I would live to have the features associated with the i-pilot but loosing the wrist control is to much to ask.

WB is correct in that without the co-pilot or the i-pilot the foot control can get annoying.