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What's your budget first and foremost.
How do they compare to nVidia range though?
Price between 290x and 390x is still quite a bit.
Don't have one per say, was looking at 290x (so about £300) but if 390x blows the 290x away then I can justify spending £50 more on it.
I game at 1920x1080 (Borderless windowed mode), but have 3 screens.
Games typically only run in middle screen though.