Was looking to replace my 6770 crossfire setup and at the moment can get a sapphire 7970 for $330 and 310 after rebate, should i get it or wait until the next gen 8000 cards come out and get something like a 8870 or 8950/8970? Expect pricing of the 8000 cards are like $600 for the 8970 and i think little under $500 for the 8950 if pricing is right