Finally received my M551d-a2r Friday evening.
Initial reaction to out-of-the-box settings for watching content thru my sony blu-ray player is good. Did streaming, blu-ray and 3d blu-ray viewing.
When the delivery guys set up the tv, they had been working hard and put a few smudges on the screen during setup. No problem I'll clean them off later. After watching a couple of movies with my kids, I found a couple of what I thought were smudges about 1/3 in and 1/3 up from bottom of screen. While trying to clean them, the light pressure seemed to clear them up. But there was no smudge. And as soon as I removed pressure, they became distorted again. I haven't wall mounted the tv yet. The spots seem to be approximately lined up with the lower wall mount holes on the back of the tv. Not sure if exactly lined up with them, but close when eyeballing it.
Once I noticed the spot in a light colored scene, it popped out at me every time a lighter scene stayed on that area of the screen.
I'm hoping this is just a quality control issue that will be resolved with a replacement tv. I received the first one the local store received. They are scheduled to receive more in this week. Guess I will have to see how their exchange process works.
As far as what I have seen so far, I like the tv's picture quality. There is the remote issue that seems to impact the up arrow the most. Why that one key over the others puzzles me. The rumored firmware fix will hopefully make the remote issue a non-issue soon. This tv is replacing two previous Panasonic plasma tv's that died prematurely. They had mirror like screens. This Vizio tv has a lightly matted finish. It will still reflect light from behind, but not as bad as the plasma's I had.
If you get a set without screen issues, I would recommend this tv.