I live my surface pro 4. Extreme portability, fast and just works. I don't have any issues with tablet mode, and the pen is great. It's not as good a tablet as an iPad Pro, but then again the iPad Pro isn't as good of a computer for my needs. Different strokes for different folks, as is always the case.
Yeah Im not saying its a terrible device, its well made and I do like the design and the stand.
There is a difference tho between "I dont have issues in tablet mode" and the iPad touch experience.
The secret is you cannot make a device that is top of the line in both categories.
A macbook pro or proper windows 10 laptop runs rings around the surface as a laptop and as a tablet it really is useless. Windows app store is a ghost town, even android tablets are better.
One of my friend has a surface 3, and he loves it, but even he says that tablet mode makes you cry.