Oh yeah you will notice the different. Even my wife who is an alien to the technology saw the difference when I downgraded from 1440p to 1080p panel. She said the colors were much better in the other screen (1440p one)
I think we can not link ebay links here but if you are living in USA, take a look at overlord monitors, and aurio monitors sold in Microcenter.
If you will import from Korea, than I preffer the Crossover one.