"Works fine without Nike shoes"4.5 starson by askew--2008
Pros: Very easy to use, accurate
Cons: Web graphs flashy but not all that useful
Summary: I've been using the iPod Sport Kit for several months and have been very happy with it. I'm not a runner...I walk, usually on a treadmill but sometimes outside. The iPod Sport Kit measures the same distance reported by my treadmill. I did not go through callibration.
I've had good luck using the transmitter "pellet" with my New Balance shoes. I simply wedge the sensor inbetween the shoe laces and the shoe tongue, near the toe. At first I was worried about it slipping out but I've not had a problem with losing the pellet. I always make sure the shoe laces are snug above the pellet.Updated
I forgot to comment on the Web site that shows your running or walking results. It's very flashy, but not nearly as useful as the SportBrain site. (I used to use a SportBrain). The SportBrain site did a much better job at showing daily, weekly, and monthly graphs and had daily graphs that did a much better job of showing the details of your workout. It wasn't as "pretty" as the Nike site, but much more useful. I'd like to see the Nike developers take a look at the SportBrain site and incorporate some of that site's ideas into their design.