CJ C: I really like the ability to download the data into a computer. The reason is that then I can see tha data points every 10 secs. It graphs speed, cadence, heartrate, distance ect. It also summaries the averages for every mile. So I can take a fairly easy warm up Then Blast (well for me it feels like blasting) for a few miles then do a warm down. You may not think this is necessary but I'd get something upgradeable to do all this. As a retired Database programmer the Geekness runs strong in me.