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So I've been a happy nike+ (and ipod nano) user now since 2007 and its been a great tool for helping become a better runner, fitter, more focused and acheiving goals. I cant recommend it enough. I've spent a lot of time calibrating my sensor to get it as accurate as possible and managed to run the recent reading half marathon with the nike+ distance matching the mapmyrun distrance to around 99.9% accuracy....although I ran the VLM a month later and according to nike+ I ran 28.9 miles rather than 26.2....now this could have been because I spent the entire race weaving, overtaking and taking every corner as wide as possible (charity place meant I started down the back with the slowies), so my gait kept changing, but obviously this meant my pacing was way off.
So the obvious move for me to try and get more consistant accuracy would be to go to a GPS watch, in particular the new nike+ sportwatch GPS (with tomtom gps).
Has anyone else made the move? I've read reviews and it seems just as accurate as the garmin 110 and obviously I have 4 years worth of nike+ running data I could stay with if I switch to the nike+ watch. Is the GPS more or less accurate than a properly calibrated nike+ shoe sensor? The downside I see from the watch is currently when im running, I hit the ipod button my ipod and I get spoken feedback over my music (distance, time, pace) rather than need to look at the watch (and take my eyes off the road), which could be difficult during the night runs. Is this sacrifce worth it for the increased accuracy? It might seem a minor quible but I'd rather not waste £180 if its not going to give me greater accuracy.
The other idea is just continue using my current ipod/nike shoe sensor for training (since its accurate) and just bust out the nike GPS watch on race days? But if im doing that I'd want it to be more accurate over marathon distances for example.
And im aware if I had an iphone (which has gps and the nike+ app) I could have the best of both worlds, but I have a work blackberry that wont be changing any time soon. Unless anyone has heard about apple putting gps in the new nano or touch?