I am not fammiliar with most of these. I can offer a comparison that might help, I am running the nVidia 4800 which handles everything I have thrown at it without a hiccup. This includes of course CS5 Master Collection, but also 3ds max, Mudbox (very resource intensive), Motionbuilder and Vue 8.
You might want to compare 4800 specs versus your primary choices and see what comes closest.
The specs for it are:
|Memory Size Total||1.5 GB|
|Memory Bandwidth (GB/sec)||76.8|
|Dual Link DVI-I||1|
|# of Digital Outputs||3 (2 out of 3 active at a time)|
|# of Analog Outputs||1|
|Stereo (3-pin Mini-DIN)||1|
|Maximum Display Resolution Digital @ 60Hz||2560x1600|
|3D Vision/3D Vision Pro|
|SLI Multi-OS Technology|
|NVIDIA CUDA Architecture|
|SLI Frame Rendering Support|
Hope that helps.