Don't do it, you will never get your money back! At current difficulty, a 7950 will "mine" 0.32BTC per month. And the difficulty will continue to rise...
The best would be to order from an exclusive re-seller that has the product in stock. But in reality, you will only find pre-orders or group-buys linked to those pre-orders.
You're too late. Pre-orders were valid to "cut the line" for one week. Now all the pre-orders are useless. If you order now, you will be behind everybody. There is a little less than 890 people that "cut the line" with pre-orders. You need to add to that all the people that ordered without a pre-order, but we don't know how many.
Sorry for butting in in your discussion but don't buy any power supplies yet.
We will have a large Technical announcement coming next week. Where we will give even more accurate Power figures and GH/s.
It will be a significant announcement which I hope will make all of our customers happy. and no before you ask I wont reveal any details before that newsletter goes out
again please don't buy a 1200W power supply you simply will not need one that powerful or expensive.