XL2720Z should run at 120 or 144Hz

[Hooch]

Hello.
In setting of my BenQ XL2720Z I see that optimal is 120Hz. Is this mistake? Are there any drawback to using 144Hz instead of "optimal" 120Hz? Any differences (other than frequency)? Maybe monitor lifetime?

[Q83Ia7ta]

Some people say colors are more accurate at 120Hz. Also Motion Blur Reduction gives better quality at 120Hz afaik.
1,5 years on 144Hz (XL2411T, same notification at OSD) and no problems.