Just about any movie you've bought within the last couple years is probably a DL disk. I wouldn't worry too much about compatibility with consumer hardware. However, that's not to say that it's not a good practice to check your dvd in the crappiest player you can buy (i got mine for 23 bucks at Wal-Mart). It's a good way to test that everything is good on the dvd, and if that player will play the disc, then I don't worry about any other players having problems.