Oooh, I like that Garmin 305! A little pricey, but it looks like a good candidate for my Christmas list. Or maybe when school starts and I start getting paid again... I'm such a gearhead. Or does this just come under accessorizing?

So the Garmin uses GPS technology to calculate speed and distance, I gather. But Garmin's ad copy isn't clear on whether you need the cadence option just to calculate speed (calls it "speed/pedaling cadence sensor"). Bikemom, can you shed any light on this confusion? I'm not too concerned about measuring my cadence, but I do like pretty much everything else about this snappy little item.