I've had the m701d for 3 days now. I've been reading everyone's posts for days. I wanted to wait a while to test before posting my results. I have the vizio e60 upstairs and have been very pleased with its quality in a fairly lit, windowed room.
A 70 inch TV is awesome. It sits in a dark room in the basement. The firmware is 1.05.
First thing I noticed is that in order to get a nice bright picture I had to turn Auto Brightness option to OFF. With it at any other setting the picture is so dark its pointless. The dark scenes in movies have trouble. I don't really mean dark its actually the shadows or dimmed parts of a scene. It just looks black, unless Auto Brightness is off. When its ON (Low/Med/High) the "pop" of colors is gone and the shadows are black. I have yet to find the correct setting (other options) that would allow Auto Brightness to be anything but OFF.
This feature does help the black parts and I recommend having it ON. However, it comes with some issues. When having a computer hooked up with a black background and only the mouse showing, wherever the mouse is on the screen there are visible faint light coming from each side of the screen. At the end of a movie when the screen goes black to start rolling credits it does go black but when the white names start scrolling there is a visible faint light on both sides of the screen that scroll with the names. With smart dimming off you don't notice it but then the whole screen shows the faint lighting like clouds. I'm still playing with the settings but this is by far the biggest complaint I have thus far. When watching Amazing Spider Man I had to turn the brightness up to see what was in the dark parts of certain scenes. On some stuff I find that the smart dimming feature needs to be turned off and on other movies/scenes having it on is ok. When this feature is OFF I see faint clouds all over the screen when the screen is all black. When the TV is first turned on and the VIZIO logo appears the clouds are very visible (it looks really bad). Its exactly like the picture that was posted earlier but mine doesn't have the crazy white dots at the top, but the clouds ARE present (not in the exact same spots as the other persons). Is that normal? I don't see this on the e60. I can remove the "clouds" by either turning smart dimming ON or lowering the brightness (but this of course takes away from the color "pop" during light scenes and makes dark scenes difficult to see). If these issues are normal I can live with it as it doesn't seem to really impact actual entertainment, who cares about the credits anyway? Once a movie is rolling I don't really see these issues.
The e601i upstairs has several additional "advanced" settings that the m70 lacks (can't recall them at the moment). I seem to recall that a few of these settings would be nice to have on the m series. I have purchased the Disney WOW disc and it will be here Monday. I hope it helps.
I know it sounds like all I'm doing is bashing the TV and you would be correct thus far. But there are some good things about it.
Gaming and animation looks really really good. Daylight scenes with colors are bright and vivid. Although, each movie or TV show seems to require different brightness/back lighting/smart dim/etc options. Trust me, I've played with all settings for hours now and haven't found THE magic setup. The 3D is AMAZING. I'm used to 3D. I've had an Nvidia 3D computer setup for about 3 years now and am an avid 3D gamer. DirecTV only has ESPN 3D (cancelled at end of 2013) and 3NET. So 3D may not be enjoyed as much as I like. However, I was able to get the 3D working for computer games but I haven't tested this fully yet.
Can anyone else comment on the "cloudy" issues I'm experiencing? Can anyone else with the 70 inch provide their optimal settings? I'll try to post some more pictures when I get home this afternoon of these issues.
Here is what it looks like with a movie going. Sorry its a bit out of focus.