I like the Sigma 1609, it comes with a cadence feature that you can use or not use. Also has backlight, temperature, information backup in case battery dies or is being replaced, and a low battery display. It can be had for less then you wanted to pay, for about $35; see: http://www.amazon.com/Sigma-1609-Cad.../dp/B0030CHBM0

I've had two wireless computers, a Cateye and a VDO and none of those lasted more then 3 years, plus the battery in the sending unit last about 6 months. So I went back to wired to get back some reliability. If you want the wireless the 1609 STS is wireless and sells for about $48.

Also see this for more details on the 1609: http://www.sigmasport.com/us/produkt..._wired/bc1609/