Personally, I'd recommend the 270x Toxic 2GB from Sapphire. Had experience with this card and just gifted it to my brother to start his build off as I updated to a 290x.
I would also recommend the 270x since it is not much more and is faster. Plus later you can over clock it very easily. I would recommend this one.
MSI Radeon R9 270X 2GB TWIN FROZR Video Card
Personally, I'd recommend the 270x Toxic 2GB from Sapphire. Had experience with this card and just gifted it to my brother to start his build off as I updated to a 290x.