I just purchased a replacement probe for my Pinpoint pH meter. There were two choices; the BRS version or the OEM. The OEM was an extra 5 bucks, so, I just went with the OEM.
I've used the double junction pH probe from BRS for a number of years.
I check it against a salifert pH test occasionally and it always is within the range that the salifert test reveals. I clean it once every 3-4 months by soaking it in a vinegar and water solution then I re-calibrate it.