I have experience only with systems that use optical media, so I'm not qualified to speak of systems with cartridges or other non-optical media (I guess I could be qualified if I had more knowledge, but I don't). For optical media, Blu-ray has a strong tendency to require game installs, so I'd be tempted to say BD has insufficient read speeds for most games. DVD also had similar issues with read speeds, although I don't recall it being a huge issue in most of the games I've played. On the other hand, I don't recall it being an issue at all in any of the CD games I've played, so I'll have to go with CD. In reality I suspect it's a close call between CD and DVD though, but based on my own, fairly limited experience, CD takes the win. But of course this is all excluding non-optical media, and I suspect there would be pretty strong arguments that could be made for them.







