R9 290X is the better choice given that its on par to slightly faster compared to GTX 970 and has 4GB VRAM. the Lightning is built like a tank and is an easy choice.
http://www.sweclockers.com/recension/19925-geforce-gtx-960-fran-asus-gigabyte-och-msi/17#pagehead
http://www.techpowerup.com/reviews/Gigabyte/GTX_960_G1_Gaming/28.html
http://gamegpu.ru/test-video-cards/igry-2014-goda-protiv-sovremennykh-videokart.html
http://www.sweclockers.com/recension/19925-geforce-gtx-960-fran-asus-gigabyte-och-msi/17#pagehead
http://www.techpowerup.com/reviews/Gigabyte/GTX_960_G1_Gaming/28.html
http://gamegpu.ru/test-video-cards/igry-2014-goda-protiv-sovremennykh-videokart.html
