The experience I had with this XFX model was bad, everyone had problems with just over 1 year of mining ...
They have a bad cooling system.
I had the rx470 4GB earlier models, and they were bombproof. They didn't clock as high as Sapphire or MSI tho, but they were much cheaper.
All this said, you'd be better off 2nd hand/Nvidia/checking your electric rate at the moment...