I'm interested in a more sophisticated lap timer to improve my riding. I've been using Harry's laptimer on my iPhone for a couple of track days and it is quite good in showing track section speed, acceleration and breaking. I wonder what Speedangle and Moto-D GPS Next can do better for $500, other than the > 10Hz accuracy of course. - I like to check my riding after each session. Harry's laptimer makes it very easy since it's just an iphone app. Unless I bring a laptop to the track I don't think I can use Speedangle or GPS Next until I go back home. At which point I will hardly remember what happened during each session. - I would like to compare my riding with an expert rider data. So overlay my recording and the expert throttle/break/angle data to show where I'm losing time exactly. - Any other coach-like use I can make it of these lap timers or other devices please let me know.
http://www.speedangle.com/
http://www.motodracing.com/motorcycle-gps-lap-timer-start-next