When I got my gamecube, I made sure to buy only the Nintendo controllers. Now, after months of button-mashing, I will soon have to replace two controllers that are acting up. On one, the "b" button seems to be stuck in the down position. You can still click it, but it doesn't spring back up, and therefore it is sometimes unresponsive. On the other, the "C" stick is "trending downwards". I know it is supposed to re-calibrate when you start the system, but this one acts like it is always pointing down. Just wondering if any others have had similar problems with the NINTENDO brand controllers? If the Nintendo controllers are notoriously bad, can you recommend a decent 3rd party controller?