So i've been thinking about getting a second Msi 7870 Ghz edition. I love the card but it's starting to cough, so i was going to get a second one to max everything again with no issue. but a cheap r9 290 caught my attention. It's $280 and it's reference but it's such an improvement from the 7870 and it's only $80 more. Should I go for it? And it's also used, but from a highly rated user. should I trust the ratings?
http://www.amazon.com/MSI-Computer-R9-290-4GD5/dp/B00GCB6794/ref=sr_1_2?ie=UTF8&qid=1399486303&sr=8-2&keywords=msi+r9+290
http://www.amazon.com/MSI-Computer-R9-290-4GD5/dp/B00GCB6794/ref=sr_1_2?ie=UTF8&qid=1399486303&sr=8-2&keywords=msi+r9+290