Here is a great YT vid about this. Check out this guy's other vids, he has a whole series on the SP 3.

https://www.youtube.com/watch?v=RpZdl9rn8ms

The Pro 4 should be that much better.

As for the Book, the performance is virtually identical to the Pro 4. Where they differ is in the overall concept. The Book is a laptop first with a detachable tablet but very low battery life when it's detached, and it has more USB ports and maybe better graphics, while the Pro 4 is a tablet first that you can add the keyboard to so it can act like a laptop.

There are lots of YT vids comparing the two.

Bob


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