I have been using this one for the last 8 years:
I use it on both of my PC's. (there is no shadow on XP, even if you have that setting enabled)
Shows up well on both light & dark backgrounds and the animated blinking tip (looks like little yellow sparks) lets me know if my old 9x PC is frozen or just being extremely slow.
I have tried some others, but I keep coming back to this one.
but I see that switching to a left facing cursor, might throw you for a loop. Did I get you dizzy?
Those are actually perfect for left handed people. They make more sense when you are using your mouse on the left side of your keyboard, with your left hand.