I was able to get this monitor on sale and it has been great to me for the last month. Colors really pop to me and everything is so much clearer. Coming from 1080p the difference is night and day. There is some color shifting when looking from different angles but unless you're super picky and for whatever reason viewing at different angles, this shouldn't be an annoyance for you. If you ran this monitor in a pair then it might be an issue. The 4K is incredible. Toms hardware has a pretty nice review on their website. I am using this monitor for music production and I can see my entire project loaded up in the DAW thanks to the 28 inch screen. I thought the colors looked really good how it came honestly. I didn't care too much for the other settings and just left it how it was when it arrived. This is a great entry level 4K monitor especially if you're on a budget. Also, gaming looks great. Even on low settings 4K really looks intense. Make sure you got a good gpu. I recommend picking this up on sale if you can. Heads up, the inputs on the back stick out of the monitor and also the monitor only tilts. It's not adjustable up or down. Not an issue for me. Buttons aren't that bad honestly. Not the greatest though either. I cant comment on freesync since I'm running off of a laptop with a GTX860M. Also, DISPLAY PORT IS THE ONLY WAY TO GET 60HZ 4K UNLESS YOU HAVE A HDMI 2.0 PORT ON YOUR COMPUTER!!! I had to grab a display port to mini display port for my laptop because mine doesn't support a HDMI 2.0 cord only HDMI 1.0. So I was only getting 30hz 4K and that is entirely unusable. So make sure you got HDMI 2.0 port and cable for your computer or get a display port to get that full 60hz 4K.