Which Monitor is best for gaming?!?

[Voprix]

Hi,
I am doing my upgrades this year and am looking for a 27 inch monitor for my gaming Setup. I have been looking at two particular monitors so far and was wandering which is better.

http://www.amazon.com/gp/product/B00MSOND8C?redirect=true&ref_=s9_simh_gw_g147_i2_r

or

http://www.newegg.com/Product/Product.aspx?Item=N82E16824236466

Now the ROG has G-sync and the other Freesync. They are both 144hz 2560 x 1440 which I do want. The biggest thing that I do not understand is the little features or even the type of displays(TN / ISP).

Currently my processor is the I7 4790K and I am running a GTX 970. I am planning to SLI with two 970's shortly after buying the monitor.

So my question to all of you, which monitor is better? Is G-sync really that much better then Freesync? Also if you have any other suggestions on monitors feel free to post them, I am looking for a 27 inch - 144hz - 2560 x 1440p monitor.

 

[guanyu210379]

If you have nVidia's GPUs, GSync is the only one for you.
FreeSync is only for AMD's GPUs.

If you plan to use FreeSync, you must replace your current GTX970 with AMD GPUs e.g. R9 390.

GTX970s on SLI is nice, looking at that you have already one.