Avoid Antec, cheaper Corsairs, Seasonics, beQuiet, Compucase and other cheaper brands.
Corsair AX-series, XFX or if availabe in your country look for a brand called Super Flower (ONLY Golden Green and Golden King, which are their own).
While Super Flower is still rather unknown brand, their Golden Green and Golden King -series power supplies have been proven to be extremely reliable and cool (quiet).
However those without the Golden Green- or Golden King -name are not the same and use the same crap than cheap Seasonics and Antecs.
Other than that the choice is pretty much up to your needs, I would like to say however that your setup with even a double 7870 will not consume more than 500W. But the choice is up to you. :razz: