Guys, I owned the origional Zoom 506 bass pad for a long time, and it has finally met it's day. I was thinking about replacing it with another Zoom pad, but when when i went to the music store, I was baffled. There were 2 new Zoom bass pads. One was somewhat silver in color and smaller, while the other one had an expression pedal, and was slightly larger. What the hell happened? When did they come out with 2 new ones? Are they actually new, and if so, which one is newer? Which one do I get? Ah yes, questions, questions.