Just got my new 27" in today. I have a 2.2Ghz i7 17" MBP that I have been using for just a few months. I have kept it very clutter free and just with the essentials that I use and all of my mail accounts are configured correctly. I also use Parallels desktop and have it configured to my liking. Sure, I could start this new iMac fresh but would really like if I could transfer my hard drive over to the new iMac as a carbon copy. I could use Carbon Copy Cloner, but is there any con to doing that? Did it really matter that the original computer the OS was installed on has now changed? I just ordered my SSD today so I have a few days to think this over. If there is no downside to a carbon copy image then that's the route I figure I will go. Thanks!