This is what i have been looking at.
or i might settle for a 22 depending on cash but this is the 22" im looking at
Both of those monitors should roughly equal in performance. You will be able to see the exact same amount of stuff in windows and games. It will look roughly the same on both, depending on view distance.
The only real difference there is size.
For example, a 28" 1920x1080 would be worse than a 27" 2560x1440.