Needless to say that it would a very bad investment to throw a couple of thousands of dollars on a 3-year-old Mac Pro when you can get twice the performance with a custom-built computer.
I’ve been pretty happy with my Hackintosh, it’s proved itself to be a powerful system and it’s been running reliably for about 18 months.
That said, I’m now faced with updating it to macOS Sierra, and that could be problematic. If I remember correctly, the update from Yosemite to El Capitan was not too bad, but I did have to play around with the boot loader. I’m hoping the macOS Sierra upgrade will go smoothly, but not knowing how it will go is part and parcel of running a Hackintosh. If you can handle that, maybe your next Mac really should be a Hackintosh.