Hi all, I have just subscribed after buying an SP4 which will replace my aging 2011 MBA (11"/i7/4gb/250gb). I decided to take the jump after looking at almost every ultrabook/portable out there. My mind was almost set on a DELL XPS 13, then I bumped on a local store's very aggressive offer (SP4 i5/4gb/128gb/typecover + pen included -30% of the tablet-only street price), and knew I could not skip that one. The first approach was not a very good one, since the system was plagued with driver-related bugs. A ton of software/firmware updates later the situation has improved dramatically, and now I can say that I am really very satisfied, Operating Systems-wise I have never had any particular preference (well no... I used to love BeOs...), and therefore can work indifferently on MacOS, Windows or Linux. But the experience I am getting with this machine is something totally new. I use Evernote a lot to collect clippings, bits of informations and notes which, I will mash together in a single file/spreadsheet. On other systems this has never been an hassle-free operation, the SP4 is giving me a simplicity and freedom of use that I find refreshing. As I had an old copy of Office 2013 lying around I decided to give it a go, although I usually prefer other suites to get my work done. Well, I have discovered yesterday that I can use the SP4 pen to annotate/highlight/modify any file that I have ever produced with Office, save it on Google Drive and retrieve it, complete with the said notes/highlights and such, on any other device I will use to access GD. To cut a long story short, my SP4 is enabling me to skip a lot of little annoying routines I have built through the years, to circumvent the limitations that other systems had imposed on my workfkows. Moreover, I have started using it even when I'm home (to watch Sky movies and series, to draw, play on Steam...), thus rendering useless the rig I had assembled to cover my gaming/leisure needs. In one move the SP4 has been replacing my work laptop, my home computer, my Xbox 360 and my couch-potato-tablet. I of course have had to buy a beefy card (Sandisk Ultra SDXC 200gb), but now I'm fully covered, and I think I will be good for a while.