Presently i have the last version of Nero and Clonedvd, what is the best software for burn 1 dvd to DVD+R DL (8.5db)?
DVD Decrypter (its free). Just rip movie as iso and burn back to DL disc.
You can use CloneDVD2 and AnyDVD that is available on the same site as CloneDVD2 (www.slysoft.com).
But keep in mind that your DVD drive has to be capable not just of reading DVD-DL but of burning DL too.
I will test my 451s@832s with a DVD+R DL Verbatim...