So i want to just say before i begin this is going to be a way more complicated question then the title...
Now i am upgrading, These are my options:
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Sapphire Radeon VAPOR-X R9 280X 329.99$
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Gigabyte GTX 770 4GB 449.99$
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Now the reason i have selected these is they are the few GPU's that match my semi-rare color scheme these days:
Blue White Black (Build)
http://i.imgur.com/HlkwTto.jpg
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And now what i am looking for is something i can add another card of, in the future.
Now when considering these is the technology that is contained within them (Mantle, G-Sync etc.)
and not to forget i want the best frames i can for 3 1080p monitors [5670x1080]
Now i personally have no preference between the two even though i like to render videos and game creation.
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Usage Situation:
Video editing
Game creation with UDK and Unity
Photoshopping
2560x1440p Gaming
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Now should i take the chance of Mantle being incredible and popular among devs or should i go with the CUDA giant and all the extra debt?
GeForce GTX 770
VS
RADEON HD 280x
And last of all we all want to see the banana fight just do it already!