I have an old (+30 years) VHS cassette which had been poorly stored at high temperatures (50c+) and in high humidity, yet ontodvd managed to faithfully copy the film and provide a good quality DVD despite these challenges. There were significant delays in order completion which needed multiple phone calls to rectify but an apology was given and the DVD was received by the time required; sent by 'guaranteed next day delivery' at their expense.
The cost was extremely reasonable and despite the hiccups about return delivery, I wouldn't hesitate to use them again or recommend them for their high quality work.