There really aren't any intel equivalents, haven't been for several generations now. An fx 9590 is no cheaper than an i5 so no real savings there. Not to mention the headaches of pairing it with a suitable (expensive) motherboard with proper power delivery and cooling. Many users end up underclocking their 9590's to get them stable, you'd be better off with an 8350 and overclocking it if you absolutely have to go amd.
As others have mentioned, amd's zen is closer to being released. It would be worth waiting for, buying now will sink you into a 4+ yr old platform when the new one everyone's been waiting for is just months away. Bad timing to get into the fx line as it's being phased out. That would be your best bet for amd though like...