I dunno if double posting is allowed but I uploaded all Pixeldrain files to Mega:
Mega
Also, I finished encoding a JAV and I was trying to compare the two. Try to spot the difference. The final encode wound up being 1.1 GB iirc whilst the original file was 6.5 or so I think. There will ALWAYS be SOME sort of data loss when compressing, the question is how easily can you see it.
I'm no pro at this stuff and Handbrake is sort of an 'ez mode' for encoding. But if you're TRULY serious about this stuff I hear ffmpeg is much better. I dont mess with settings to much or apply filters.