I have got Super Monkey Ball 1 and 2 for GameCube and SMB DX for Xbox and played through all of these. For some reason they made the controls in SMB DX horribly worse. If you want to get through Master 19 (it's Master 9 in SMB1) prepare for hours of training. The controls are fucked up, as you can't move the Monkey very slowely anymore, When the game finally realizes, you are pushing the analog stick into one direction, the monkey really speeds up. This is horrible in the later levels. Even worse is the PlayStation 2 version. The analog stick is much worse, in quality and position, the game is constantly slowing down and loading is getting on your nerves. I'd allways prefer SMB1&2 over DX.