@flintknapper, Before i respond i would like to point out that im not a fanboy of either companies, Now regarding your question both are really good gpu manufacturers, But nvidia currently has the edge in gpu industry because of their physx technology and sli compatibility, there have been very few reports of Micro stuttering in nvidia cards but amd on the other hand does tend to have these issues in the beginning until they release a fix later on, Most game updates released these days are to fix issues for amd cards.. you can read it in the game update description..