I am thinking of getting either the Pedal Box or Commander. They both seem to do basically the same thing. The commander is not waterproof, but comes with Bluetooth so I would most likely mount it under the seat. The Pedal Box is water resistant (not water proof) and has an option for Bluetooth for an extra cost. I see that most of the Spyder dealers associated with the forums sell the Pedal Box (I believe the non Bluetooth version).
I am curious on what the thoughts are on these. Which is the most popular and why? And where have you mounted it?