So I got my M652i, as I said yesterday.
Anyways, finally got home after work to play with it. The picture quality is great, and the overall features seem good. Contrast, brightness, sharpness, are all good.
However, I'm completely disappointed. Why? Because of these stupid-ass shadowy bands going across it. Can anyone help me with identifying just what the hell this is? And better yet, can it be fixed? It doesn't show on all content (probably due to motion of the content, light changing, etc, and seems to be more prevalent on solid, fixed blue and green background content. It's especially annoying in sports that take place on green fields, as it looks like shadows on the field. It's annoying as hell, and I'm seriously considering calling Vizio and asking that it be replaced. I expect way more out of a $1500 television.
Here's the pics. http://imgur.com/5kPvwbZ,ctk3r2n,N9hO7xz
The first 2 pics are of the Vizio dark gray splash page upon bootup, and the 3rd pic is of Planet Earth's Oceans Deep scene (note the whale starting to come in at the very bottom -- thats not a visual artifact). The problem slightly improves if I lower my viewing angle, but there is no viewing angle where i cannot see this pattern.
Note the 2 side-by-side small circles at the bottom center, then it turns into a WiFi signal-esque pattern of shadowy bands that run up to just over halfway up the screen.
EDIT/UPDATE: I just emailed Vizio the pics, and asked for a replacement. I was going to wait, but there's simply no way that what I'm seeing is normal, after owning plenty of LCD panels and TVs. I can understand some bright spots, but even then, on a full array panel those should be very minimal. These shadowy bands are absolutely ridiculous for a brand new device. My 2007 Samsung 40" LCD puts this thing to shame in that department.