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@Sparky
Quick question: am I right in thinking that a bike-mounted GPS won't be anywhere near as accurate on speed/distance as a normal bike computer? And, if so, will getting one with a cadence/speed sensor and using the speed sensor (I think they work like a bike computer: magnet on spoke, receiver on seat stay) make it as accurate as a normal bike computer? I'm still really interested in getting a Garmin, but all the info on the net seems to be wishy-washy. Someone needs to iPod-ify the bike GPS market and make a really simple one...