Bicycle computer: cadence, backlit?
I've recently realized rather belatedly that getting to where I could ride my whole commute in the 5th gear (bike has 7: 1 is easiest, 7 hardest) isn't necessarily a good thing. I pedal much slower now. When I tried to go to an easier gear and pedal faster, I think my muscles were too worn out to be able to move my legs fast enough. It hadn't felt like they were tired at all...
So, I think I need a computer to help me get better at increasing my pedaling speed. I am a school bus driver so I'm very often pedaling to work in the dark (and soon home too!), so a backlit feature is probably needed. Won't help to have a computer if I can't see it! Temperature would also be nice. I assume they all come with speed and distance stuff.
I tried searching online and the sheer variety is mind-boggling. Plus, its very hard to specify cadence and such as features.
As inexpensive as possible is great, of course. There are lots of goodies I want to get for my bike, and I'm giving myself only a small monthly allowance to spend.