The Garmin Forerunner 110 is a great training aid for your outdoor runs. It doesn't have custom screens so you can just see distance, time and average pace and you can scroll through to see heart rate as well. It doesn't have the feature to set interval targets or heart rate zones, or pace alarms, but let's be honest - unless you are training for the next olympics, do you really need all that!
You can upload all the data to Garmin Connect and you can see a map of your run through the Google maps interface and you can look at your heart rate and pace along the length of your run. You can set an autolap so that the Forerunner records data every mile, for instance and for most runners this is surely enough.
It's really easy to use and perfect for anyone who wants an automatic record of their runs.