Great idea, poor design
I bought this controller as well as a San Diego Chargers wireless controller for both my kids for Christmas 06. All my anticipated excitement was soon squashed by the poor design of the battery compartment. It stacks the AAA batteries in a pyramid, 2 on the base with the 3rd on top. The 3rd battery constantly pops out and is very difficult to keep in. The compartment door itself does not stay closed either further aggrevating the situation. It seems those guys down at Mad Catz could design this with a rechargable battery and docking station. They say they redesigned newer controllers without the vibrating feature to save battery power. Should have spent that R&D time redesigning the battery compartment issue. Another issue is that the controller symbols do not light up, and if they did, it would be an added bonus. All and all a great idea, just needs some tweaking...