I have personally used Memorex DVD-Rs once with success but they are on the bottom end of the DVD spectrum. They are cheap and readily available around me though. Out of the 25 pack I bought maybe 2 ended up as coasters. I know I'm probably going to get flamed for this seeing as how they are the most recommended disc on the site but Verbatim are absolute crap IMO. They are the bottom of the DVD spectrum! Out of a 100 pack I had about a 15% failure rate. I personally prefer and mainly use Sony unless in a pinch. They may cost a little bit more but they are well worth it. I have honestly never had a Sony disc fail on me. I don't believe that there is a best disc to burn on for a certain device. I believe there are just better quality discs. Now everyone please don't flame me...It's all a matter of personal opinion and experience.