I've been looking at brake controllers, and the Tekonsha prodigy looks like a good buy. With the pocket dock, it seems like it could be pretty easily swapped between my truck ('71 K5, not yet on the road) and my friends truck that we use pretty often ('97 Dodge Ram 1500 4x4). Anybody running this brake controller? I've got a few Q's about it: 1) how fast is swapping the Prodigy in/out with the pocket mount? 2) what do you like/dislike about the controller? 3) any other controllers on the market that are of comparable quality, features, and have a digital display?