So Apple didn't announce any speed bumps. And its time to stop waiting and just buy already. Other than .2 in speed- is there any difference between the 1.8 and 1.6 singles? I know the 1.8 has been discontinued- which worries me a bit. I guess the question is- has the 1.6 been updated anymore than the 1.8 would be? Is the 1.8 that much faster to warrant a $300 price difference? (although the 1.8 comes with 160gb HD - the 1.6 has a 80 GB HD) Thoughts?