tayo yuden is rule, I get an error rate about 1/10th of ritek media's and 1/50th of no-name media (this is from seen with k-probe, I do not know how accurate this thing actually reads errors, it might just like the tayo yudens more, but I get around 1000 PO errors a disc, whereas nameless ones (CMC magnetics mostly) have gotten about 40 to 55k PO errors, nothing out of hand (you can get quite a bit) but I'd rather be on teh low end than on the high end, and the price difference here is 0.5 ? for such a small diff per disc it aint worth it.