No HDMI on receiver
My Yamaha has no HDMI input so I'm forced to send video to Plasma, audio to receiver. The only down side is to remember to turn the volume down on the Plasma when using Yamaha receiver, but not a big problem with my Harmony Remote.
I've read that you won't see a huge PQ difference using component, but the Panasonic th-50pz85u only has 2 component inputs, and I have 3 devices using component that need to be plugged in.
This forces me into using at least one HDMI input, which will be for the HD-PVR cable box.
Its to bad HDMI carries the audio source with it as well but it could come in handy if I want to set up the Harmony to watch TV only with built in speaker, and avoid using the 5.1 home theater.