I would aim for an ATI HD7750 (with gddr5 memory) if you can afford it. The cards you list are not gaming class cards.
You may find this article usefull and if you are comparing hardware then check out the Hierarchy Chart on page 7. Toms updates this article every month. I find it quite helpfull.http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html