Do you mean when outputting 1080p/24 from a Bluray Disc or another resolution from a BD or DVD??
I meant both, though I think the real improvement over the BDP-83 comes from PAL DVDs. Most BDPs are much of a muchness with 1080p24, and its the video processing that separates them. The 93 seems to me to have better de-interlacing than the 83; there are fewer artifacts or edge enhancement, and despite looking a bit sharper and less noisy, the 93 seems to have a less "processed" look. The colours and contrast do look a bit hot compared to the 83 on default picture settings so it needs to be backed-off a bit to compare like-with-like.
Nick