I have some but have not used them yet. I've heard so many bad things about them that I decided that these will be used for family movies to give away. I've since moved on to Verbatim, Fuji, and Maxell (MIJ) media.
The TDK's are made by CMC Magnetics. Most people say stay away from them. For $7.99 I bought two packs just to find out for myself, so a couple of packs 16 bucks is no great loss.
I would not load up on them. Your better off getting some Verbatims when they go on sale!