IMO Gigabyte GTX 560 Ti SOC for 265usd. It's got good cooling with a guaranteed 1000MHz out of the box.
I'm sure other cards will get there and I like the cooler and the 1000MHz under warranty. The GTX 460 1Gb is still a great card @ 810 and up on the core. It's worth noting some 460 1Gb cards may be had for as low as around 160usd AR. That's a lot of card for the asking price, particularly for folks who OC. Most do 810-850 without issues. I've seen many cards like the Asus DirectCU often make 900 on the core with a voltage bump.
Honestly I could understand someone buying either.