I won't be using any media that begins with the letters "Ri" again. I did send for them so I can smash them with a hammer. Thanks for the post!
Seriously, I will do a couple of redundant back-up's on them and see how they do. All of my older CMC media is doing well, even if some of the initial burns were flaky at the outer edges of the disks and those were binned if I spotted it in scan. I'll probably try more quality CMC media soon, not the very cheap stuff.
Besides it often giving high errors in the last 600Mb of a disk, it's been a very compatable media for my benq 1620 (B7W9) as long as it's burned at the rated speed. Slower burns go haywire for some reason. I put the outer edge failures down to bad dye spread and hope this is only a problem with the cheaper no-brand crap I've bought in the past.