The PSL Purolators were a good filter. I can't attest to the rebranded "Boss" filters, because I no longer use Purolator.
PureOnes were my go-to filter for a long time, until I began cutting them open at home. It took finding 2 out of 4 of mine torn on 5,000 mile OCIs to convince me that there was a legitimate problem with Purolator's design/quality/who cares. There are too many filters on the market to maintain that kind of brand loyalty with a faulty product. However, with that said, I now only use Fram Ultras, which for the money can not be beat.
Search these forums and you will be bombarded with anecdotal evidence that, I hate to admit, should not be easily dismissed.