After years of insisting on little-used proprietary formats and software, Sony has recently been mending its ways: the company's latest Walkman players have virtually become champions of cross-platform standards (including the Mac), beautiful design and the no-fuss interface. The S730 promises to be an evolution of an already solid formula, especially with its active noise cancelation feature, but it remains to be seen how well the S730 stacks up against the veteran iPod nano and Microsoft's latest Zune software. Click through for our full S730 review.