This is my card:
http://www.hisdigital.com/un/product2-772.shtml

I get 60FPS with no problems at all. It drops in really crowded areas sometimes, but rarely ever below 40, and then only for a moment. This is with all of the settings tuned to maximum as well.
I love these cards, this is my second IceQ card. They overclock very well, and are very cool and quiet.
When I picked this up it was $400CAD. If you want to stay below $300 then you could check out the R9 270X instead. It's the step down from this one, and should still perform admirably, but maybe not at maximum settings. You will most likely be sticking with an AMD card if you are shopping on a budget as they tend to run cheaper than nVidia models.