380 is more future proof at this point. The tahiti gpus r9 280/x/hd 7950/70 have been dropped. Amd is known to release x versions of their gpus, so there is a possibility for a 380x to appear on the market. Wait at least a month and keep your eyes open for announcements and reviews. You always want to wait till every hardware gen is out and the market is stable to make a purchase. Better yet buy a second hand r9 290 non-reference.
