On the MTB's I have a problem in that I keep Breaking the sensor or knocking the Computer off the bike and losing it. Still keep buying new ones to replace them but then something goes out of kilter on rides- or the batteries go flat or something interferes with the wireless ones- so as they break I have stopped replacing them. Don't miss them at all. I know when i have done enough miles for the day- or WOW- that was a fast hill or This is Steep and slow.
Then there is the Tandem that also has a cadence sensor on it and it looks as though there are wires all over the place. Just waiting for them to snag on something and break again. The road bike however has a wireless computer on it that does not give a problem. That is how I know that the new wheels and tyres work better than the OM's did and that I have done 3,300 miles on it so far in 11 months.
Other than that- a Computer is the best toy you can get for a bike- but not at $50 a throw every other week.
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How long was I in the army? Five foot seven.
Spike Milligan