Taiyo Yuden DVD recordable media as of a few years ago cost 1 cent more than their renown CD-R media. I don't trust it for anything serious, I barely trust MAM-A Gold DVD-RWs.

I played the MO game in the '90s and found them to be rock solid, and durable as well (e.g. I'd throw a disk cartridge in my backpack without problems). Theoretically they looked quite quite solid.