I would get the Antec EA650 just because of price difference there is no real difference in quality.
The old corsair TX only has 2 PCIe power cables the Antec has 4 which does not matter for a single GPU.
I like XFX, but I'm going to stick to the Antec PSU. Antec is a good manufacturer, they have a good reputation and I respect them as a brand just that little more than Corsair in the PSU business. You wouldn't go wrong with the TX version 2 though, it will more often than not match the Antec with connectors, power consumption, noise, cooling, efficiency and warranty, so I can only tell you that either is good. Go for the cheaper one of the two, but stay away from the old TX650. The lower amount of power connectors for peripheral compontents will mean power adaptors and all kinds of other stuff that could've been avoided.