I sell them, and customers love them, and at $28 cdn. for a spindle of 50 inkjet printable that is good. There is not much info out there on testing of this brand in particular, but I know PRO DISC to be a very good company in optical data and storage equipment and media, so I trust them. They are also teaming up with 3M who are rated to have some of the best out there as well. When I buy DVD media, I buy it to last, I don't care about a few coasters.