Top of the range running computer with the expensive Polar S3 footpod (excellent stride cadence & measurement). Next cheapest is ebay @£272
Only applicable for those wanting detailled feedback, not for your casual runner (unless they have money to burn)
This is the slightly older RS800SD model that doesnt integrate as well with the cycling gps!
"If you want the best planning, monitoring and the best analysis of your running than there is no better watch than the Polar RS800sd - period.
Developed in support of world-class runners and their coaches to help upgrade efficiency, stride length, and the turnover speed between foot falls.
It's a fine line attempting to find the balance between leg power and speed which is what the proper cadence will accomplish. The less time your feet are in contact with the ground, for a specified distance, than the faster you will be. The S3 Stride Sensor ontains micro-equipment to produce very constant and precise tempo and measurement of distance. The S3 fits straight in selected Adidas shoes such as the Fusion and the S3 is unaffected by water, plus has a user replaceable battery.
Polar has got the chest strap action figured out with what is arguably the most comfortable chest strap going - the Wearlink WIND. In attendance are more recent capabilities that are significant besides the chest belt and stride sensor, that are part of the package with the Polar RS800sd. The recent Runners Indicator attribute combines speed and heart rate information gathered all through the run. This allows regular data
regarding the athlete's operational level on both running efficiency and fitness.