The Garmin Forerunner 201 ($125) is great for training and hard core runners, although walkers could use it as well. It more expensive than the reliable NL-2000 or the Omron and offers features they don't, but one complaint we found on several of the GPS pedometer reviews (all brands) was that they lose the GPS signal periodically making them unreliable. Newer models seem to perform better, so look for the latest product lines to be safe.
