Which GPU should i buy?

Hello guys i need you to help me to decide which GPU is the best one for my gaming setup
Thats my pc

CPU Type

AMD FX™-8350 Eight-Core Processor

RAM
16 GB 3DDR 1600 MHZ

Windows 10

and Graphics Chipset

AMD Radeon ™ R9 390 Series (8GB VRAM)

which one i should get?

gtx 1060 6gb OR r480 (or anything close to the price range)