Several posters here claim they can see difference between programs and/or transcoders, and also can tell difference of compression 90% and 80%, etc.
There are users who spend 3-5 hours for several passes of analysis and transcoding. (and as a joke, they later try to burn fast to save 12 seconds...)
For standard movies without super fast action, I compress up to 65% without hesitation. For example, I compressed Harry Potter I to 65%, but this is a 152 minutes long, wide screen format. Once the movie starts I do not see blurrs or blots, or bits, or blahs. Also, I am not pro-actively looking for these imperfections, I just watch the movie itself.
I do not want to spend hours on the analysis and transcoding, and then even more time trying to look at the picture to find imperfections, if any. I am trying to watch the movie, not watch the imperfections, so what now? watch the movie again after it was accepted as "perfect"?
My backups are for personal use and time shifting, not for commercial distribution or showing.
I do not have 6 foot TV set, so maybe size matters
Anyway, when prices of DL media drop below, say, 80 cents, we will not compress so much, and transcoding will be forgotten ...