What video card do you use for combustion 4.0?

Hey All,

I am looking to increase my preview-rendering time with particle operators and composite operators in combustion 4.

I have done my homework here and it still seems to be a shot in the dark as to what video card to replace mine with. I have check the autodesk's website and talked to there rep. I also looked at all the user forums too.

So my question is what video card do you use and would you recommend it?

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I have a ATI FireGL V3100 (Vram is 128) in the computer described below.
Dell: Precision 380 (http://features.cgsociety.org/story_custom.php?story_id=3094&page=)
OS: XP Pro
Prossessor: Intel P4 3.60Ghz (2 CPUs)
Memory: 2 Gigs
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Thanks
-=Jesse=-