The Samsung J4000 LED TV isn't a very good budget TV. It has a good viewing angle, but the picture quality in other respects isn't great. It is also only a 720p TV, and lower-resolution footage isn't clear on it.
The Samsung UN32J4000 LED TV is a very basic TV without any extra features. Its picture quality isn't great, except for the viewing angle. It has poor blacks, uniformity issues, and doesn't display low resolution content well.
The contrast ratio isn't great. The blacks will look gray in dark rooms.
The colors remain the same when you watch this TV at an angle, which is great.
Update 01/06/2017: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results from 2016 TVs.
Game Mode doesn't make a significant difference on the input lag. All modes have about the same amount.