ViewSonic VX2458-C-mhd

Had it for a week now:

I feel like it has very good value for money.
FreeSync is working great with my Nvidia GTX 1070 since you can now use GSync with FreeSync monitors (must used DisplayPort).

The only thing I have noticed is "ghosting" of objects in-game but you kind of have to look for it to notice it.

Another thing is that there is flickering, but I tend to only get this on loading screens on certain games - I feel like this has to do with how some loading screens render at like 10fps or lower and I think FreeSync is trying to sync with that too.
Have not noticed flickering in-game while playing.

It has good colour, another thing to note might be that the monitor's menu may be annoying to navigate for some people.
However, I got used to the controls quickly, it's just something to learn.

Hope this gives insight to someone :)