Upgraded my PC mostly, looking for a VGA

For a past few months I upgrade my old PC with new motherboard, CPU, RA, case. My other hardware is OK. The last thing I looking for is a new VGA. I rather not call myself a hardcore gamer, but i like if my currently games an run well on 1080p, usually I'm not dreaming about 60 fps. Plus don't plan to spend too much for a VGA. Except if I can get a fancy which surly can handle ME4 or the coming Mirror's Edge too, and of course Batman AK.

My PC specs so far:
Intel i5 4460 3,2 GHz
2x4 GB Kingston HyperX Fury DDR3 1600 MHz
ASUS H81M-PLUS
ASUS Xonar DSX
Chieftec iARENA PSU 500W

I also had 2x HDD and a Blu-Ray writer.
I looking for Asus cards. I thinking in a GTX 750 Ti 2 GB, Strix GTX 750 Ti OC 4 GB or a GTX 960 2 GB.

Upgraded my PC mostly, looking for a VGA