There used to be a lot of variability in cd-rom drives as far as reading disks made in other drives, and dvd/cd combo writers can sometimes make disks that an old cd drive cant read.
Other than the physical readability, you might need to limit the disk to a 650GB old school format even though the media can do more.
Be fearful when others are greedy, and greedy when others are fearful. Just another form of "buy low, sell high" for those who have trouble with things. This rule is not universal. Do not buy a 1973 Pinto because everyone else is afraid of it.