just received a pack of dvd disc but thay do not play on all dvd players just got a new dvd player that plays - and +dvd but shinka - not play tried + r and thay work i have burned in high def and just dvd and none play had this dvd before had no problem but i must have got + with out knowing so now not able to use the i will have to buy some more

Shinka is the best professional blank media. I have used them many times without a problem. They are fully guaranteed and always available. Shinka also do a CD version and other formats including printable. They do cost a little bit more but they always work.I won't use anything else.