Originally Posted by sstorkel

Yikes! Where'd you get your information?!? The Garmin Edge 305 weighs 3.1 ounces, according to Garmin, while the Edge 705 weighs 3.7 ounces. The Edge 705 also has better battery life than the Edge 305: 15 hours for the 705 versus 12 hours for the 305, at least according to Garmin.

They're both great devices. I've been using a Garmin Edge 705 for the last 12 months. For me, the slightly larger screen and better battery life, combined with finding a terrific deal made the 705 a no-brainer. The fact that it has maps and ANT+Sport power-meter compatibility were icing on the cake. Have to admit that I rarely use maps while on the bike, but I loved having them when I rode down the Pacific coast to Los Angeles. Can't imagine doing a long trip without GPS now!