I agree with JMGNYC.
In the last month I went from MPC-HC using MadVR, LAV splitter, LAV audio, and ffdshow video with deinterlacing on a
Core Duo 7400 computer with a Radeon 4670 to a Yamaha HTR6060 HDMI 1.1 AVR to a Panasonic 58inch plasma
Then I replaced the Radeon 4670 with an Asus 440 1GB Gddr5 and started using LAV Cuvid insead of ffdshow video. IMO I got easily recognizable improvement in video quality.
Then I replaced the Yamaha AVR with a Pioneer VSX-31 1.4 HDMI AVR. I started bitstreaming. The audio quality improved. Also, the Pioneer has a video processor and IMO the video got even better.
Anál nathrach, orth’ bháis’s bethad, do chél dénmha