I don't know much about optodisc, but as long as they work perfectly and aren't filled with errors.
I saw a review on cdrinfo, the optodisc had quite a low reflectiveness. This can vary from disc to disc but I doubt it would be much higher than what they measured, which was .38
Personally, I would be using some verbatim 8x -R for my PS2 games. Or other verbatim if you can't find the 8x -r. They burn with low errors and high reflectiveness, so the ps2 laser would struggle less.
But I can't say there is too much wrong with optodisc 0R8. As long as it doesn't degrade over time like Ritek G05, it should be fine to use.