A bit off-topic, but I'd like to have some input on a good unit. It's for a motorcycle, for better accuracy than the original wobbly-needle unit, so the criteria may be a little different than for bicycles.
I need large numerals, the capacity to register high speed (relative to bicycles only; this thing will never top 85 mph), and are there any that have some sort of lighting to see the numbers in the dark?