I'm going to cast my vote again for the cheapies. There are other factors which can cause a sensor to "fail". The tip of the sensor is unforgiving of getting antiseize compound on it during installation, for instance. Don't let v8guy convince you to spend more than you have to on your O2 sensor. Realize, too, the difference between a universal and an "OEM" is the sensor doesn't have an $80 plastic connector on the end that clicks onto the factory wiring harness. You have to splice it in using the supplied butt connector/s. That's it.
This might hurt my argument but I'll add it anyway. Just because the same company makes products for multiple "brands" doesn't mean the products are all produced with the same specs. It's not efficient for every company to tool up to produce their own pistons, for example. It's smarter to draft your engineering spec and farm the manufacturing out to Wiseco. I know springs and oil filters work this way, too. -scott