At the moment I have a Sceptre 50" TV as a monitor and I love it. However, 1080p on such a huge TV causes a visible pixellation if you sit up close (and I do), and 60Hz looks much worse in games than 120Hz, I miss my old laptop's 120Hz screen. Moreover, I play all games at 4K downscaled to 1080p with quite a good performance, I could easily run 1440p at 100+Hz most of the time. So I think I'm missing a lot in gaming, my rig is kind of wasted. The rig itself is 980 GTX + 4790k. My budget is limited to $1200, although I would consider going a bit higher for a better model.
I decided to get G-Sync since I hate both tearing and input lag. However, G-Sync and 1440p+ combined don't leave much choice. Specifically, I found only two models I would consider buying:
4K, 60 Hz, $800
ASUS ROG SWIFT
1440p, 144 Hz, $800
I am favoring the Asus one. 1440p roughly gives 2 times the performance of 4K, so I will be able to make effective use of a very high refresh rate. Acer one is great for its picture, but, since it is still 60Hz, it doesn't feel like much of an upgrade to my current TV. I know, 60Hz with G-Sync looks much more fluid than 60Hz without G-Sync, but will it look good compared to 144Hz G-Sync? Since I've never seen G-Sync in action with my own eyes, I would like to hear your opinions guys on whether I need anything more than 60Hz with G-Sync.
P.S. If you are going to say that "human eye can't see past 60 FPS", that some people tried to tell me on other forums, please don't bother posting.