There's a local used game shop near me that are unfortunately sold out of the Sega brand VMUs, but they said on the phone that they have some of the unofficial ones. I know from my PS2 days that those "8x" memory units wiped my saves, so has anyone had luck with the Dreamcast ones? He said that he had "1x" and "4x", which I assume is the memory, so... help please. And thank you.