ok, I ordered 100 taiyo yuden thermal 8x, Supermediastore only offered these and inket printable and these where signifantly less at 52 cents. I do have an inket printer, but I bought these ONLY for backing up DVD in my overstuffed hardrives.

well I get these disks and realize they are silver on both sides.
so my question is, is it safe to write on these with a sharpee, I know this is a dumb being that I realize that it seems that any cdr or retail music cd has silver in the unprinted gaps. I just wanted to make sure, since these are backups

also are these any less quality than say a silver matte, i mean are the silver matte more durable