I totally agree with all encoders not being created equal. And it certainly pays to combine the best applications, specialising in different processes, to create the "perfect" DVD.
As for the second part. I'm affraid that my "real world" job has impossed on my hobby recently
, so I haven't had the chance to sit down and complete the guide. However, I'm happy for people to add their thoughts on creating the perfect DVD - what applications, settings etc...