I'm greatly confused with respect to the effect of the dpi settings of the mouse's software and it's effect on precision movement. Like I said, I'm not a gamer and have no experience to draw on, though I'll use some gamming refernces vs. photoshop references). Perhaps you can spell it out for me. Does higher dpi of mouse = greater precision, accuracy; or does higher dpi of mouse = lower precision, accuracy? Is this correct? higher dpi setting of mouse (i.e. 2000 dpi on the G7) = faster, less precise movement of cusor (i.e. turning around quickly in FPS game); hence, less accurate movement (i.e. moving a duplicate layer exactly 4 pixels for certain effects If the above is correct then a mouse with a maximum of 800 dpi (like the MX Revolution) would be good for detailed work in photoshop; and the lower dpi settings of the mouse would provide precise, accuarte snipper targeting.