Help me choosing the right gaming monitor

[Nero22]

Hi, this is my current build:
Cooler Master Storm Trooper (Window)
Asus Sabertooth Z77
Intel Core i5 3570K
Sapphire Radeon HD 7970 Vapor-X 3GB
Corsair Vengeance LP CML8GX3M2A1600C9 (Dual Channel 8GB 1600Mhz)
Scythe Mugen 3 PC Games Hardware Edition
Samsung 840 series Pro 256GB
Corsair HX850

Additional informations:
I will play mostly: Dota 2, Path of Exile, Modded Minecraft, Diablo 3, Counter Strike: Source, Starcraft II, Torch Light 2 and some other MMORPG's. (Ranking from the left by how frequently I play).
I will be sitting 100 cm from the monitor.
I might purchase another 7970 for crossfire in a few years.

Please let me know which monitor is the best for my need and why.

 

[sam_p_lay]

Would that PLS panel be the Asus PB278Q? If so, it'll deliver image quality in a whole other league from the TN panels and with Trace Free set at 40, an incredibly fast response time too.

http://www.tftcentral.co.uk/reviews/asus_pb278q.htm

 

[Nero22]

Yes you are correct, all four are Asus. I believe they are the best when it comes down to gaming monitors.
I have taken some look at all four monitors in a nearby store and narrowed my choices down to:
27" 2560x1440 60hz 5ms response time PLS panel
24" 1920x1080 144hz 1ms response time TN panel
In the end its either 1440p or 144hz.

 

[sam_p_lay]

Agreed - my next monitor will be an Asus. I'd definitely go with the 27". Not primarily for the resolution (though that is an awesome resolution) but for the massively superior image quality of IPS. You couldn't pay me to use a TN panel now.