[jakevoytko]

If money is no object, commodity stereo equipment exists with better range than the Kinect. From Wikipedia:

   The Kinect sensor has a practical ranging limit of 1.2–3.5 metres 
   (3.9–11 ft) distance when used with the Xbox software.

The Kinect was limited by cost, size, and the need to work in poor lighting conditions. But by spacing your higher-quality cameras out (increasing the baseline), accurate depth at 10 meters is a reasonable goal.

One such device: http://www.ptgrey.com/products/bumblebee2/index.asp

Accuracy chart: http://www.ptgrey.com/support/kb/data/stereoaccuracy.xls [XLS warning]

[shasta]

Money is always an object. Any idea roughly what these go for?

[modeless]

Not only bad lighting conditions but repeating patterns, low-contrast backrounds and large areas of a single color. Kinect is far more robust than any kind of stereo vision, and at the same time far less CPU intensive.