I received a Blu Ray burner as a gift a couple weeks ago and immediately made discs from the DE MKVs, and good lord is it an improvement on the DVD-9. If your Blu Ray player supports it you can probably get away with just playing the files from a hard drive, but I've got an older Sony that only takes drives formatted to FAT32, which puts a 4 GB cap on individual file size. I don't know that I would have bought the burner on my own, but if you've got a friend or family member with one and your player won't take the MKVs, you should at least try to use someone else's to get them on discs, because they're really gorgeous.