I use a Toe Peak I got from Amazon.com.
http://www.amazon.com/Topeak-Comp-Fu...6112956&sr=1-8
Good readable read outs and easy to use as well as reasonable cost. With my old eyes the bifocals are a given for me to see and read. I do wish it was wireless but it mounted up easily and I routed along the front brake cable, per the usual means.
Bill