Well after over a year I'm tired of 60hz@1200p and I need something better to push my 670s. Both the 144hz@1080p and 60hz@1600p monitors would be viable upgrades in different ways, the former for refresh rate and the latter for higher res. With the 24 inch I not only get 144hz but also 3D to see if that's worth using and the ability to go multi-monitor at res like 5760x1080 and 3240x1920. But the 30 inch would give me better viewing angles, a better picture and even higher res for everything.
So should I go and see what 144hz(and maybe even 3D along with multi-monitors)is like 1st to see how much better it is than 60hz, or should I go for 2560x1600 1st?