I got my 5667 all setup last night and my home theater all connected, I just wanted to chime in and give my impressions of the picture quality.
First of all, I can not believe the quality of just basic standard definition programming. Obviously it's not perfect, but even compared my old 65" mitsu CRT this is stunning. That's a word I've been using a lot lately to describe the set. Samsung did an amazing job with this one, it will definately be a home run for them.
I haven't been able to watch a DVD on it yet using the upconvert, but I played a few games on MVP Baseball this morning on my PS2 using the component cable. The one thing I noticed was that on startup the little spinning light balls on the PS2 menu left a lot of ghosting on the screen, same with the Playstation 2 logo... when the MVP menus came up though it was all gone, worried me for a second though.
Anyway, gameplay was flawless, very little blur and smear, the new color wheel kept up perfectly. Also, I've seen ZERO rainbow effect so far, which is a very nice surprise.
HD quality of my moto box is amazing, I'm using Monster Video 3 component cables (my sammy is currently using the HDMI connection). I watched some HD Net last night (Biniki Destinations...woot) and it was... drool. That's about it... drool.
My only complaint so far is the remote... it's not the best layout I've seen. Even last years sammy was better. I have yet to program my sony remote commander, once I do that it won't be a problem anymore.
Anyhow, I have the day off today to tweak eveything and hopefully check a movie out later. I'll post later and let ya'll know how that goes.