Summary: If you're looking to buy bigger (~$500/$500+) I would wait till April/May or so and slum with a mid-range to weather the rough patch, as mid-range seems to be partially shielded from the Bitcoin bubble and general crappiness of the GPU market's offerings atm. The 2 non-reference GTX 780's I test-drove before purposefully going to this 270x really didn't give me a great bump and I wasn't that impressed, so I decided to wait things out.
Pros: -Solid FPS-per-dollar on the mid-range market., -the Windforce heatsink makes the cooling overkill for this card's output and thus ultra silent (always a good thing). It's the same tri heatsink that's on the 280x and GTX 780's), -mid-range is mostly insulated from the Bitcoin bubble
Cons: -Voltage locked, -No new game packages in sight for a while until AMD brings back Never Settle