I refused to buy the 7000 series AMD cards and hung on to my 6950 because the prices were at least $100 too high for every model at launch. It was like AMD was trying to copy NVidia and over-price their cards. So I did what the prudent person does and resisted the urge for the new shiny and waited. I know I want to stick with AMD because their cards have been flawless for me for several generations now. No crashes, no bugs, and high image quality. If they were somehow failing me, I might consider NVidia again, but they aren't so i haven't. You don't change to an unknown from a known unless you are so bored you welcome the potential for introducing problems.
Now the 7000 series cards are finally hitting attractive pricing and I'm going to get one once the reviews hit (tomorrow?) and we know for sure what to expect from the new gen GPUs and how much it may or may not impact older product prices in the short term (which is in part based on how soon we'll see the mid-range cards of the next gen actually available to purchase and therefore competing with the older cards, driving old card prices down until inventories deplete).