You get what you pay for. I got a 25-pack to try out from Shop4Tech, and after discounts and Google Checkout, it came to $17 delivered. Out of the 25, six were bad. That's a 24% failure rate and in my book is unacceptable. They're fairly slow burning although playback is pretty good. There's no homepage on the net that I can find to warranty these six bad ones, so I guess I'm stuck. I would not recommend them and will not be buying them again. If anyone out there can direct me to a site to request warranty from Matrix, please let me know. I'm sure Shop4Tech won't warranty just six discs.