When I purchased my Surface Book, I was told it's best to purchase it in the Microsoft physical store so I could return it with no questions asked if I encountered any problems. Whereas if I purchase it online, from a website like Amazon, I would have to deal with Amazon's customer service.

Edit: The only problem I have with my SB trackpad is that I normally use two finger swipe to scroll down with my hand slightly at an angle to the touchpad (since I'm right handed). I've never had a problem with any MacBook, but on the SB it frequently registers that as a pinch and attempts to zoom.