All, thanks for any advice. I'm thinking about upgrading my late 2008 15" MBP. It's been a great machine, but I want a bigger screen. The 17" MBP seems like it would be the perfect machine, but then I started considering an iMac. It's bigger and faster, yet not portable. When I think about what I use my MBP for when I'm using a laptops 'portability' benefit, I'm typically on my couch surfing or travelling (surfing/email/facebook/access to pictures and music). Anything I do that would benefit from a bigger more powerful machine could be done at my desk, so an iMac is a possibility for me. My questions are around how easy/hard it is to share files/documents/videos (imovie)/pictures(iphoto)/music(itunes) between multiple machines. I essentially want the two to be 'one'. I've never had to do this in an OS X environment. I'll want full and complete access to all these things from either machine at any point in time. I'd prefer to not have separate versions of files/pictures/music on the different machines if I went with an iMac/MBP combination. I don't want to not have full control to any of this from either machine. I don't want to have to go through loops to hack my way to get this to work. Can I get some input from those experienced with this? Thanks!