Share 'My bike computer'

I must point out from the start that I am a nerd - telephony & computers are my business and I love great quality electronics gear.  And I love bike riding so I recently completed a three month process of combining my two loves, and I reckon that I now have a fantastic bike computer.   The first stop was an iPhone 4. After breaking the screen for the third time on my 3GS I decided to contract…