All of my comments have been regarding viewing Fios tv content. Well I decided to play some blu-Ray and DVD material to see how well it did.
Right now I do not have a DVD player as my Pioneer has proven that it cannot upscale DVD through HDMI without flipping out. Also, I don't have a blu-ray player yet, since this is my first HDTV and I had no reason to own one before now. However, I do have a blu-ray drive on my pc which is connected to the tv via HDMI 1.4, so this is what I used to play some discs.
I only had a short amount of time to play a few things. First I popped in my Close Encounters blu-ray, and I was instantly amazed. The image was spectacular, and the motion had no issues that I could see. The auto motion plus was completely off the whole time. The motion was very film-like. No complaints.
Then I popped in my Space:1999 blu-ray. Again, just incredible. Very smooth motion, not a hiccup to be found, and no "soap opera effect". Again, auto motion plus was off.
Then I tried my Buck Rogers DVD (yeah I know, I'm a 70's sci-fi geek). I was expecting lots of juddering, but to my surprise, it looked amazing for a DVD. I really didn't think DVD would look so good on a 46" screen, but it really did. And no motion issues! Very film-like motion. Once again, I had the auto motion plus turned completely off, and there was no stuttering effect at all. The motion was beautiful and consistent. No "soap opera effect" because I didn't need to engage the auto motion plus.
I turned it back to regular tv, and instantly, yuck! Stuttering channels, "soap opera", just as bad as I've been seeing. So it seems that maybe dvd and blu-ray sources are handled much better with motion than HDTV. Which is too bad. On the one hand, the discs all looked amazing. On the other hand, I find watching Fios very annoying. I also don't know how a stand-alone player would handle things, but I can definitely say the software I used to play the discs, which does DVD up-conversion, looked awesome.
Also, I'm really noticing the flashlighting, especially in the bottom-left corner. And I'm seeing some clouding around that same area. I really hate to have to pack it back up and do an exchange, especially if I'm not even sure that I want to keep it anyways. But if I could get rid of some of this flashlighting it would certainly be a plus.