I have the CM414 that is downloadable into the PC. I think the download features are great. I rarely look at the numbers going by me when riding now since I know I will ahve them when I get home. You can also mark certain points in your ride and then lable the points on the computer for future reference. The guys that ride the same roads as me really like my computer so they know the grades and elevations we have gone through.

Here is a screen capture of my last weekend ride.

CM414 is great as far as I am concerned. Sometimes I wish I would got the one with the HRM in it. Oh well, it is nice to have an HRM off the bike (ie running).