980 isn't worth it. The only cards worth buying are 290, 290x and 970.
I don't even think the 290x is that great. I really think the R9 290 is the amazing sweet spot. The GTX 970 isn't even that great unless you're a gameworks freak. The R9 290 is just leagues above the competition in price to performance.
But I expect the OP to go with the GTX 970. It's what people always pick.
Personally, I take the R9 290. R9 290 CF. Or the GTX 970 if I play Gameworks games, or if I play games on day 1 of release when they're poorly optimized because I enjoy paying $60+ to beta test.
