What I've found when using the MPV decoder (included in CCCP) is a substantially degraded image compared with using FFDshow filters. Alas, you can't add FFDshow filters to the graph of DVD playback if you've chosen the Dscaler decoder or the MPV decoder.
When using the Dscaler decoder, on my setup, CPU is pegged and DVD playback is unacceptable. The later builds of FFDshow (CSLID ICL versions) run very well on my CPU, I've seen dramatic speed ups due to some recent optimizations, so that's why I'm so interested in continuing this direction.
All that said, I realize the nature of my predicament, but the only issues I've had with using just FFDshow for DVD playback (libmpeg2) is that when using Resize and Aspect, you lose the menu indicators as you move from choice to choice. Other than that, it has been rock solid w/MC12 for me, other than this cropping issue that just popped up.
Yeah, so in the end, even though in your gut, you'd like to use MC for *everything*, it's not a big deal as I've still got MPC and VLC for DVD playback until I upgrade to a "real" video card.