Hi everyone. I need a new O2 sensor for the old TP. I can get a bosch one on ebay for $65 delivered. The local autopro has an ACA brand universal O2 sensor to suit the TP for $34. Anyone had any experience with these cheaper sensors? Do they last less than half the time, so its false economy to buy one, or what?

Thanks for all your suggestions guys :P .
Its done now, just ordered the ACA O2 sensor online, $25 delivered, so can't go wrong really.
Used an auction site (OZTION.com.au) that I haven't used before, good prices compared to the others. Might be worth a look for some of you, if you don't know about it.