I've replaced this set 3 times and each time 2 or 3 discs would not play in any DVD player I had. People on amazon.com have had the same problems.

If you e-mail Bandai they will tell you to ship the bad DVDs back to them (AT YOUR OWN COST) and they'll replace them.

I suggest you wait until this quality control issue is resolved before buying, unless you want to deal with Bandai.