shmups like strikers 1945 2and3 have got some frameskipping,i just turn the sound off and it runs really well,the kaneko shooters like stormblade,vasara1,2and changeairblade run really well i think. the xbox is a great emulation machine,i think the authors of the emus have worked minor miricales getting mame even to the stage its at just now on the box.heres hoping someone can update the core past 0.84.its a big ask i know but we can always hope,i would love to be able to play the raiden fighters trilogy on the xbox.