Looking for a new display for a dual display set up. budget $300. Ips vs. Tn

So I am looking to get another monitor and make my current monitor the second monitor in my set up. I will be running a r9 280x and a 7970 in crossfire. My budget is $300 (max). My usual games are not fps, but i do play bf4. My current monitor is an acer x233.

http://www.pcworld.c...cd-monitor.html

 

I am concerned that moving from an old Tn panel to an ips panel will be annoying if i have frame shudder from the lower hertz. However my current tn only does 60hz and it is fine. My next question/problem is whether to go with something bigger that 1920x1080. I would not mind going with something bigger but I dont know if I have the gpu power to drive my games a max on a lager screen. I would like to be at 24-27 inches I do watch a lot of movies on my computer and having a better tilt and swivel would be nice.  I also need buyers advice on what brands and specs (links would be nice).

I would either pick up a Korean 1440p 27" IPS panel, which are ~ $310 I believe. Your other option is a 144hz 1080p 24" TN panel.