A better question is, what issues didn't I face? Unlocking randomly wouldn't work, the display driver was crashing when using firefox/chrome consistently, battery life was abysmal, device would bluescreen, etc.
From what I understand they finally patched most of these out after more than a year. No need to go on that roller coaster again.
Yes, from my experience all that eventually got fixed. For the first six months that I owned my surface book, I continued to use my rMBP. But by now, I really do enjoy using it as my primary computer. What I like most about it is using it with two external monitors connected to the expansion dock. I flip the screen around on my suface book and then place it in the middle between the external monitors and hook up a wireless keyboard and mouse. This triple monitor mode is awesome and perfect for doing some sketching or use my programming IDE on the surface book while having the other two monitors available for productivity. I replicated this setup at the office and home and now I can't imagine going back.
I got my unit on initial release, so have had it for roughly 2 years. It was hit or miss for the first 3 months, but various updates solved all the issues.
It's been running like champ ever since.
Really strange how big corporations put out devices before testing them out properly!