If all you want are speed, time, and distance, anything will work just fine, including a $10 Schwinn from xmart. Pick based on features that matter to you: how it mounts, size of the display, what it can display on the screen at the same time.
I don't care about cadence. I know the difference between 60 and 70 or 100 and 120, and don't care about the difference between 75 and 78. I find the things I pay attention to while riding are current speed (I tend to go too fast early, and blow up at 15 miles or so, unless I pay attention), and distance, so I know where I am on a route or cue sheet. After the ride, I care about time in saddle, and average speed, but not on the bike.
Last edited by dscheidt; 08-16-10 at 05:40 PM.
Reason: postus prematurus