I realize this Q. has been asked but I haven't seen many opinions. I don't know what to do. This always happens to me. I buy "the latest greatest" machine from Apple and a week later it's replaced at the same freakin price. What is the word on the 8 core? Should I go ahead and buy or wait for the 8 core? If I wait, how long should I wait? What are current MP users thoughts? HELLLPPPPPP!