I have been considering getting a Surface Pro 4. Thought this was interesting on Microsoft's website.
I'm still in progress on the performance benchmarking for the Surface Book I have on loan. There are some pieces of the graphics puzzle with this that aren't exactly clear, but we are working to sort them out.
As for the link... working on that too.
I'm really looking forward to you Part II of your article. I've still got my Surface Pro 3 and wondering if I should bite the bullet and get a Surface Book.
@RyanM, I'm wondering the same thing. But from all the external reviews that I have read, there isn't enough bang-for-the-buck to upgrade from the SP3 to either the SP4 or Book.
I'm going to wait for SP5 or Book II.