Wideband suggestions

[Soul]

Looking for a wideband for my car, any suggestions on brand? This is first step and going toward fuel injection. Do I need 2 wideband sensors? One in each header? Looking for a cheaper one that will perform reliably.

Thanks ahead of time.

[MalcolmV8]

One O2 in one header is good enough for almost everyone.
I've found the DynoJet Wideband2 to be simple and easy to use. Least amount of fuss and wiring to deal with. Does not require O2 sensor calibrations out of the exhaust etc.
Also the main head unit has a long harness and allows you to tuck it in the car somewhere nicely and disconnect the sensor easily. Overall I found it to be a great little package.