I've just bought the BRYTON Ryder 30, which is a great unit, awesome screen and features.
In the box, it came with 1 sensor and a heart rate monitor, so if you want to track cadence, you are defaulted to use the GPS for speed.
I've always had a magnet sensor telling me my speed, so it feels a little different but have nothing to go from
Has anyone had any experience on the performance and accuracy of the GPS units vs a standard sensor? I'm considering buying another sensor for speed, but it's another $60, so if the GPS is accurate there may not be any need for it.
Thanks in advance.