I agree completely.  I hated my 5970 at first but seeing the hash/watt performance nothing else comes close, for long-term mining these are hands down the best card.  The fan was loud for the first month but after it burned in I lowered my fan speed 10% and it's not much louder than a table fan on high.  I wish I had money today to buy some on Newegg with the $100 off promo, hopefully they extend it one more week and I can nab another one.  The 7xxx series will be worth it in the long run if their hash/watt performance is close to the estimates so far.  Looking forward to those cards