Out of the following, which would you choose to buy and why? (regardless of price)
a) PowerColor HD 7970 V3 3GB GDDR5 Dual DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/353110-powercolor-hd-7970-v3-3gb-gddr5-dual-dvi-hdmi-dual-mini-displayport-ax7970-3gbd5-2dhv3
b) HIS HD 7970 Fan 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E
http://www.ebuyer.com/352623-his-hd-7970-fan-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-h797f3g2m
c) XFX HD 7970 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/340135-xfx-hd-7970-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-graphics-fx-797a-tnfc
d) PowerColor HD 7970 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/344636-powercolor-hd-7970-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-graphics-ax7970-3gbd5-2dh
a) PowerColor HD 7970 V3 3GB GDDR5 Dual DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/353110-powercolor-hd-7970-v3-3gb-gddr5-dual-dvi-hdmi-dual-mini-displayport-ax7970-3gbd5-2dhv3
b) HIS HD 7970 Fan 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E
http://www.ebuyer.com/352623-his-hd-7970-fan-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-h797f3g2m
c) XFX HD 7970 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/340135-xfx-hd-7970-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-graphics-fx-797a-tnfc
d) PowerColor HD 7970 3GB GDDR5 DVI HDMI Dual Mini DisplayPort PCI-E Graphics
http://www.ebuyer.com/344636-powercolor-hd-7970-3gb-gddr5-dvi-hdmi-dual-mini-displayport-pci-e-graphics-ax7970-3gbd5-2dh