Opinions on wall jacks vs. straight hook ups

[Blu-Benny]

I'm looking to see what people think of using wall jacks/plates vs. hooking everything up from source to source???

I've seen some HT galleries that have utilized wall plates and ran all wiring within the walls, the obvious advantage....fewer wires exposed.

Do you loose any quality in picture or sound when you do this?? I've contemplated doing this for speaker wire but didn't know how it would work, or if it's even an option for HDMI or anything else.

I'm looking to start framing my HT by the end of the year so I'm in the planning stages right now.

Any help/advice/info would be appreciated, or a link to another thread if this has been discussed already...