I'm going to watch this discussion Andrew! What I've read so far indicates the DVD+ will probably come out on top, largely because it's the format supported by the Win operating systems. I'm not quite ready to buy yet, but right now I'm leaning toward a burner that will write either + or - format. My understanding is that one (but I can't remember which without my cheat sheet) produces better quality data DVDs and the other produces better video DVDs.
Now let's see what people have to say who might actually know something about this subject. :)