Making a DVD

I have a couple of questions for you pros out there.

Has anybody been able to burn a DVD with the "Make DVD disc" option.
I've scrapped a lot of DVDs using that option. It tells me there's errors and the burning process stops (at about 3-5% of the burning process). I'm using the pioneer DVR-105, and I don't think there are any issue with this burner.

So that led me to do a DVD image, then using CD creator, I create a DVD from image file. That works, but now the project I'm working on will be sent out mass replication. Can I send my image file or it has to be put on tape. I know somebody on the forum mention that the region code and the copyrights could be save when creating a tape, but is it also saved when creating an image file?

My client asked me to give him the "functionnal" DVD-R and he'll use this to make the mass replication???? Can this work also?


thanks a bunch!