I see the new model xbox is currently #1 at amazon
xbox should have a very good june NPD
OK I agree you shouldnt move a machine with a spinning disc, but what about discman's, car CD players etc they seem to work reasonably well, so its certainly possible to have a machine that is able to be moved.
Portable CD players don't spin at thousands of RPM....at those speeds the disc becomes a gyroscope and doesn't like to be moved. With that said you could certainly make DVD drives that don't scratch DVDs when moved, just look at the DVD drives for laptops.