RE: terminal velocity
Larry,
Weight absolutely makes a difference in the freefall speed of any object here on planet Earth.
I've done quite a bit of skydiving, and it's obvious in freefall. That's why jumpsuits are designed the way they are, to aid in helping us all fly at the same speed, without using drastically different body positions.
Shape, drag, etc., all come into play, but weight is a part of the equation.