That feel. I used to have a 19" 1600x900 res monitor. Once I saw a 1080, I couldn't stand to look that 19", hence my upgrade to two 1920x1080.
Though I'm wishing I would have waited, saved a little more, and got a monitor with your res.
I was tossing up whether to go to 120Hz or 1440, and I'm really glad I went with 1440. Soo much more space too view websites, text document, UI intensive games also look much better. Easily one of the easiest and better ways to improve your computing experience. But dual 1080's isn't too shabby either. I have my old 1080 monitor on it's side in case I'm reading a lengthy document or for just casual movies whilst I'm playing games.