960 2gb vs MSI Radeon R7 370 DirectX 12 R7 370 GAMING 4G 4GB 256-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support A

Solution
The 960 would be a better card, as its direct competition is the R9 380, with the 380 pulling a slight edge.
If you can, a 380x would be best.