The SPro3 has replaced everything except my phone. It's no more "unwieldy" as a tablet than my original iPad; it is a great laptop (just not quite as easy to balance as a MacBook Air); and is a full desktop replacement for me when docked and connected to TWO 27" WQHD monitors. Are there compromises - sure - at each size and use category - but there is nothing as versatile as my SPro 3 - NOTHING. If the i5 just had a 512GB option, it would be perfect. I'm hoping they offer that as an option with the SPro3.
Yes, I know, my Office 365 subscription has an unlimited storage OneDrive account, but there is a lot of data I want physically, and want it regardless of internet connectivity. If Microsoft releases a Lumia flagship that can use my N-Trig pen, even the iPhone 6 will go overboard for an all Windows experience.