27" 240hz ips monitor, AW2723DF,G274QPX,VG27AQML1A

Recently I've bought a Asus XG27AQMR, but unfortunately the panel came with a defect, or at least i think it's a defect. It has very noticeable color banding, that is very distracting while watching movies, gaming or even just googling stuff. I bought it "refurbished", so that might be why. I still have a week to return it, so in the meantime I'm looking for an alternative, preferably without color banding issues.

Currently the monitors I have on my list are:
- AW2723DF
- MSI G274QPX
- ASUS TUF Gaming VG27AQML1A

But I'm open to suggestions.