Best $200-$300 single graphics card for Hackintosh?

The question is, simply, what would be the best graphics card for a hackintosh today? I intend to buy within the week, and I am a bit concerned that getting something like the GTX 285 from a value standpoint (and slightly outside my budget) since, well, in all honesty, there is better.

I am also not completely up to date as to what graphics are compatible or can work well in a hackintosh... perhaps someone could enlighten me?

For those who are curious about the rest of my build, it is an i7 (LGA 1156) with a Gigabyte MOBO and 4GB of speedy RAM, a 640gb WD HDD, and, of course, a Samsung DVD drive and Antec case+psu.

EDIT: Feel free to ask any questions! And if you think waiting for something is the best option, say so! Thanks - VGM10000