graffics card ?

[Skougreece]

hi guys...

im looking foward to buy a new graffics card and im between 3...
a-XFX radeon r9 280x 3gb double dissipation black
b-asus radeon r9 280x 3gb direct cu II
c-sapphire radeon r9 280x 3gb Tri-X OC
prise is about 240 to 280 e

my specs are .
cpu intel core i5 4460 @ 3.2 ghz
mobo asus maximus vii ranger
ram 2x4gb kit of teamgroup vulcan 2400

what in your opinion is the best for me to buy?

 

[Eximo]

A or B in this case. B gets more of a vote since it will match the motherboard nicely.