This thread from March had me thinking:
http://www.bikeforums.net/showthread...dio-at-the-gym
Coincidentally, I've changed my mind away from Polar, Suunto, etc, and decided on Garmin (even though I haven't bought one yet). I figure that downloading data would only be worthwhile if it actually worked, which, for my Mac, means that Polar is out and Suunto is funky.
My pick right now? Forerunner 405CX; although the 405 will likely suite me just fine, too.