I have been an Apple guy for quite some time now, but the appeal of the Surface has grown with each generation. Recently I bought one for my wife's office. She didn't like it for her purposes and wanted a regular laptop. So in the end it looks like I will finally get a chance to try out the SP4! Assuming she remembers to bring it home, I'll have it tomorrow night. I would love to see it replace my MacBook Pro 15", but we will see. I am very used to OS X now. My primary uses for my main machine are iTunes library management and Photoshop Lightroom and photo library management. I also have an iPad Air 2. I would love to see the iPad Pro or any kind of crossover product from Apple similar to the Surface running full OS X, but I don't see it happening. So I'm going to try to really embrace the Surface. I wish I could swap this SP4 for the 512 GB version (in a covert manner ) but it looks like I'm going to just stick to the mid-range model purchased; the i5, 8 GB, 256 GB. I decided I think the best storage expansion option would be an mSATA enclosure with a 1TB Samsung mSATA drive. I'm going back and forth a bit on how to manage this. Currently I keep most of my files on Dropbox and use selective sync to put what will fit on my MacBook (512 GB SSD) I would like to continue to use Dropbox, and my research today seems to indicate I could put my Dropbox folder on the mSATA with a bit of caution to make sure I have Dropbox off except when I want to sync files. Any thoughts on my use plans or tips for my storage plan would be greatly appreciated. I'm very excited to start trying out the Surface!