I was initially thinking of one of the low end TRUE treadmills, or maybe even dreaming of a Landice L7, but I ended up settling on a Sole F80 Treadmill:

I was able to run (with sock feet) on it for about a minute at up to 7’30” pace.  Very sturdy.  It has a 3 CHP motor, and goes up to 12 mph and 15% incline.  It has the standard hokey 12V fans like on the Star Trac treadmills in the gym (or your home computer), but it also looks to have a nice little set of speakers and other features.  I’m really only hoping to bridge the days when I can’t break away to run outside or during lunch, but this little treadmill should also give me the occasional opportunity to run a long run indoors the next time storm debris is littering the streets outside.  The best part was, I only spent half my originally planned amount.