lfkfkfkffs :
They asked for video card buying advice,not power supply buying advice. You should respect that, figuring out a good video card should come first, the power supply should come 2nd if it is actually an issue.
I would want to make sure the PSU of suitable quality before recommending a GPU purchase. I understand respecting someone's question, but many people undervalue the importance of a quality PSU (I learned the hard ways years ago). It is usually a worthwhile thing to bring up.
The 270x is the best GPU for ~$200 atm though, I totally agree there.