I don’t even think I’ve ever seen a Sony branded Blu-Ray disc. I mean, I only use DVDs (Blu-Ray entry price is high), but I still see BluRay discs too. Mostly just Verbatim though.

I’m pretty sure I only used verbatim to begin with, not that I use discs at all any more. IIRC they made one of the few that could be used to burn playable gamecube isos