I know this is a rather late reply but i didnt see this mentioned.

I have a 27" 1440p korean monitor (believe its called QNIX) which as i hear it is the same panel/quality that is used in the other much more expensive monitors just that its housed in some cheaper made housing so you dont get the extra buttons and menu functions. But it works just fine.

Its also a 60hz panel but if you get the right ones (if i rememember right its the panels that only have 1 display port that can be overclocked) they can be overclocked. I believe essentially all of them (the ones that can be overclocked at least) achieve 96hz and if you're lucky some can reach 120hz.

Thing is they only cost $200. At least thats what i paid for mine a year or 2 ago.