Offtopic: Hmm, within minutes of posting this blog this message arrived on a developer mailing list. Check out the phrase in the last line. Spooky :)

Tell me more about your bike GPS; my sense of direction is really poor.

Where did you get your reflective tape from? Thanks

Gabi: I think it's straightforward Scotchlite from the makers of various types of "sellotape". Any bike shop ought to sell it.

Re clips versus cages on pedals. If you have bad knee/s go for latter, because they allow for movement. With clips the bike has to be adjusted v accurately for leg length etc so that knees not strained, and therefore the frame size must be spot on. Still possible to wear bike shoes and therefore get advantage of solid sole with non-clips.