Just wanted to get opinions on this.
1.5 mb GTX 580 Lightning or 7870 Twin Frozr 2GD5/OC?

Checking benchmarks the 580 beats the 7870. I know the 7870 has a lower power consumption. However, I am curious what people think about these two specific cards.

580 Lightning is going for $300 USD, compared to the 7870 Twin Frozr 2GD5/OC going for $370 USD.

Opinions? Am I crazy for looking back at old tech at this time?