I'd wait till Black Friday sales start if you can before upgrading.
I ended up going with this ATI R7 265 for $110 on newegg:
http://www.newegg.com/Product/Produc...-719-_-Product
Not a bad deal considering it's a bit faster than the 7850 and less than half the price. 10x more cores than my current card, 4x the ram as well.
Edit: It has arrived!
I was half expecting the casing to be plastic like my old card, but it looks to be aluminum so hopefully that will keep it cooler. And it's about a quarter smaller.