I have a QNIX 27" 1440p, that can be overclocked to 90hz that serves me well for 3+ years. Cost only 260+ back then including shipping, and still going strong. Love this monitor. Not sure if Qoo10 still got such offer nowadays, as that was a great deal.
Incidentally, last week I bought a Prism+ 240 VA panel to try out 144hz gaming, high refresh rate is cool but I am slightly disappointed with the colours and the desktop text(compared to my Dell 1080 IPS panel, and the QNIX). Haven't managed to calibrate the colours to look good enough yet.