In my opinion DS is the best handheld for FPS games control-wise, Moon's controls work great. PSP has only one "analog" which is it's weakness. The iDevices then. The touchscreen isn't always very reliable and accurate and thumbs usually take a lot of space from the screen, but the controls can be adjusted very much (buttons moved etc.) I hope they add more control adjusting in an update or something.
yes. broken trackball. nice broken trackball = broken control scheme. gimme joystick-style controls. (as an option so we don't get everyone else whining like this)
i do agree that the controls arnt the best but its still a good game. all it needs is floating controls bit like classic doom or MC. I'm sure there will be an update