azzazel_99 :
I run a asus 144hz 1080p monitor and TRUST me you can see a difference between it and my 60hz 1080p. Bf4 is a completely different game at 144hz/120+fps. It's amazing! So for people who say you can't see a difference past 60 have never used a 120hz+ monitor. Trust me it's awesome. That's said 1440p is pretty legit too so
I've played on a 120hz monitor and there is not enough of a difference to justify the price tag. It is slightly quicker. Also, FPS past 60 are pretty much just numbers. I'm no expert, but in my personal experience, anything about 1080p and 60hz is just costing more money for relatively no gain. Don't even get me started on 4k. Five years from now everyone will be running 4k's and I'll still be running 1920x1080 because honestly, how many pixels does someone need to watch something? It's all about sound quality... That is where it does matter.
So if you want to waste your money on monitors that are going to also need more expensive GPU's to run, thus driving the price way beyond the monitor itself, go ahead. However, if you are smart (opinion, so don't be offended), you will just ignore the hype and run 1080p with a decent card and hit 60fps for years to come. There will always be something new and flashy, but if its going to cost more money and isn't much of a difference, I don't see the point.