One day with my Sp3 (i5, 8 GB, 256 GB) and my marriage is falling apart. It's not that I spend too much time with my SP3 and neglect my wife. It's because I ordered only a SP3 for me and not a second one for my wife. My wife loves to sketch and is quite envy about my new toy.
Just kidding
I really enjoy my SP3. It is supposed to replace a Galaxy Note 10.1 (the old model from mid 2012) that I used to take notes, make technical sketches at work and do some surfing at home. Apart from that I own an excellent Dell XPS 15 9530 notebook that serves as main working device.
I'm surprised how flexible the SP3 can be used. From surfing hand held without keyboard, to office use placed on a table with attached type cover and mouse, to sketching or taking hand written notes with the pen and the SP3 lying flat on table: The Sp3 excels all these tasks.
I really like it and will probably end with buying a second one for my wife.
Edit:
I'm also surprised how well the touch support works Windows 8.1 desktop mode. I have been using Windows 8.1 for half a year with the Dell, most of the time in desktop mode controlled with a mouse. I think Windows 8.1 is a significant improvement over the good Windows 7. I thought that I would spend most of the time in Metro mode on the SP3, because it was made for touch and because the controls in desktop mode would be too small to be hit successfully with the fingers. But even in desktop mode my hit rate with touch input is very good.