The best gaming monitor with native G-SYNC support we've seen so far is the ViewSonic Elite XG270QG. It's an excellent gaming monitor with a 1440p resolution and a 144Hz refresh rate that can be overclocked to 165Hz. Even if you also want to use it for your at-home office setup, it's a very good overall monitor most people should be happy with.

It has an outstanding response time at its max refresh rate, and it's also excellent when playing at 60Hz. It has a Black Frame Insertion feature to improve the appearance of motion, but like most monitors, it can't be used when G-SYNC is enabled. The input lag is really low, and although it's slightly higher than most monitors at 60Hz, most people won't notice this. It has some nice extra features like built-in speakers, the ability to put a crosshair on the screen for FPS gamers, and RGB illumination. It's a well-built monitor, and the stand allows you to adjust it in a number of ways, including putting it into portrait mode.

Unfortunately, it has a low contrast ratio, so blacks appear closer to gray, it doesn't support HDR, and it has bad out-of-the-box color accuracy, so you need to get it calibrated to enjoy it to the fullest. On the upside, it has wide viewing angles if you want to use it for co-op gaming and it gets bright enough to combat glare. All in all, it's the best G-SYNC monitor we've seen so far.