as far as i can tell, your monitor is an IPS. I prefer IPS panels because of the brightness and they preserve color when viewed from odd angles. a disadvantage of IPS is if they are made poorly there can be backbleed, which is basicly extra light showing through cracks around the screen or lighting up the edges and corners more than the center.
If you want better color accuracy, a TN panel is the way to go, but unfortunately they can really only be used facing directly at you or the color will disappear. And be wary that a large TN close up to you will have wide angles from the sides of the screen to your eyes, and so there even could be color distortion just from sitting too close to the monitor.
I think you should get a 1440 monitor because you can set your computer settings to run at 1080, so your computer will run like it did before, the only difference is the monitor displays a lower res than it is capable of, and you don't have to buy a better monitor in the future if you upgrade your computer.
As a recommendation, Lenovo and Dell make great monitors at good prices. I myself have a Lenovo 1440 and 1080, both are pretty good for what I spent on them. Look for deals in the next few weeks, because its the holidays there will be something that will go on sale at some point.