Conclusion: Update: Garmin has issued a July, 16, 2010 firmware update to fix the freeze/lock problems described in user reviews below. The Garmin Edge 500 is compact and has a clean, no-wires installation. It has a customizable, multi-mode display, accommodates an optional heart rate monitor and cadence/speed sensor, and is compatible with third-party power meters.
Pros: Compact, feature-packed, highly customizable., Sharp appearance, nice detail and finish., Convenient and sturdy stem or bar-mount system., Compatible with heart rate monitor, cadence/speed sensor, and third-party power meters.
Cons: Smallish display size = difficult to see text if more than five data fields displayed.
Excerpt: Cyclists generally train on roads they know. Since race routes are clearly marked, map functions add unnecessary bulk and expense for a lot of users, so the wireless Edge 500 does away with them. The resulting unit is much simpler than the Garmin Edge 705 bike GPS we’ve been using religiously for the last two years. It’s also half the price,and nearly half the weight (2 ounces).