Asus' MG279Q is an appealing FreeSync display. It's got a 27", 2560x1440 IPS panel with a refresh rate of 144Hz. Our own Gyromancer (Nathan Wasson) has been spending some quality time with this display in Damage Labs, and he's summed up his impressions in a video review. Check it out:
The Asus MG279Q is available today from Newegg for $600.