The static image is rarely seen to burn in on LCDs but if you travel you see it happen but those have been up for many years. And it's a non-issue since they continue to show the static images and the issue is well, not that bad since it is used for that. (Man, that needs a re-write.)
The viewing angles have improved over the years so the only folk I see with issues are those that want 180 degree viewing. While I wonder how they see any image at 90 off center you then have to think about horizontal and vertical angles. One is rarely as good as the other.
Not one maker will warrant against burn in and not one maker has published data on that. I'd drop the budget in light of this and shop at CostCo to see what they have then ask what folk think here.
-> Skip all Smart TVs since we know that's not worth a dime more.
I need to find 5 HDTVs for my office, ideally all the same model.
I need at least 2 HDMI inputs
Wide viewing angle
Minimal power consumption
I prefer LED
One of the TVs will have a map that does not change much on most of the time, if there are any models that are less likely to burn in an image that would be preferred.
Budget is $1300 per TV.
I am planning on getting an HDMI mixer to be able to show any of 4 sources on any of the TVs, at the moment looking at a Gefen 4x4 Matrix http://www.gefen.com/kvm/dproduct2.jsp?prod_id=5307