I use small, wired bike computers on my road bikes. As I am a mileage junkie, I use the data from those units for my "official records". I carry a smart phone in a jersey pocket. I figure as long as I have the smart phone anyway, I'll run Cyclemeter during rides. I record the data from the computer and Cyclemeter in my little log book and on my spreadsheet after each ride.

I am always trying to beat last year's mileage and last year's average speed, and I believe that data motivates me to stay with it. I ride the paved roads in the national forest and state forest nearby and along the bayous and fields, so I enjoy the scenery. I scope out places to pick berries, stop and talk to people etc., so it's not all about the miles, speed etc.