I vote for nVidia... even though I own a HD4870.

Reason:
- CUDA
- PhysX
- Proper OpenGL!
- Proper GSDX performance!
- And if I'm in for some suicide runs, a
single GTX 260 overclocked can break 20K in 3DMark06. ;p
- Low fan noise compared to HD48xx series.
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cChip interpreter WIP - current status: Release Candidate
LRx Filter RC - current performance rating: 9/10