A tiny bit off-topic, I suppose (apologies)
I just bought one of
these computers (the yellow wireless one - £4.99):
http://www.ebay.co.uk/itm/Digital-L...rtGoods_CyclAcces_RL&var=&hash=item35d308e915 and I'm quite happy with it, despite it sometimes reporting the wrong max. speed. It also went crazy when I took it past some electronic devices (tills, etc) in ASDA one day.
I wouldn't bet it's 100% water-resistant (it gets a little 'haze' under the screen in
very wet conditions) Anyway, I've already done just under 800 miles with it, and it's going strong. At £4.99, I won't be crying if it doesn't last forever.
Steve