My problem with Surface is the lack of apps that properly support a stylus. I don't like OneNote for a number of reasons and there are no decent alternatives. Also, from the stories I've heard, QC on Surface Pros is abysmal, as is support from MS.
I will agree on the lack of other apps (MS whiteboard is a joke), but I happen to really like OneNote. I will say, at least from my experience support is good. My power supply had a failed main cap and was arcing badly when plugged in. MS support shipped me a new one, and asked I ship the old one back when I received the new one.
I hate to say it, as I used to be part of the Slashdot anti M$ brigade, but they made a solid piece of hardware. The only thing I can fault it for is lack of a trackpoint; I spent too many years getting used to my fingers not leaving the home row to move the mouse.
This is personal opinion, but I compared the Surface to the iPad pro and to me the iPad felt much more like a toy than a serious tool for getting work done.