Have just purchased one of the new mbps. I really wanted 4gb of ram as that's what I have in my iMac and have seen the benefits, but due to the price I have stuck with the 2gb. Critical seem to be about £90 for 2x 2gb sticks. Any chance of that coming down in price over the next 3/4 months? Or do people think it wont come down and it's best to buy now and get a few extra months of the 4gb?