AOC AG352UCG or BenQ EX3501R?

The AOC is used from Amazon's Warehouse, and the BenQ is new. I'm using a RTX 2070 and am primarily interested in the g-sync/adaptive-freesync capabilities. HDR isn't a big selling point to me, and from what I've read the BenQ's HDR isn't great. I've also read that g-sync seems to be fine for the BenQ, but not sure if it's just better to go with the AOC instead.

EDIT: and I guess there's also a MSI Optixmag341cq for $100 less (the other two are $780 and $790).