Laptops that convert into tablets are like flying cars. Flying cars don't exist, because the gap between what makes a good car and what makes a good plane is insurmountably vast. There are great cars; there are great planes. No one has come up with a way to make a great car that's also a great plane.
Similarly, there's no such thing as a great laptop that's also a great tablet. The design differences, and user expectations for each, are too vast to pack into a single device. Microsoft knows this, and you can see it in the Surface lineup. The new Surface Book 3 is both a laptop and tablet, but it is very much a laptop that converts into a tablet. The Surface Go 2 is a tablet that can be used as a laptop. Neither are equally great in each category.
The Surface Book 3 feels very much like its predecessor, which my colleague David Pierce called "a serious computer for serious business." It's Microsoft's enterprise version to the consumer-facing Surface Go 2 and "prosumer" Surface Pro. The differences between the three machines come down to portability versus power, with the Surface Book 3 erring on the side of power.
The design is largely unchanged—the same awkward-looking but functional hinge is still present. Microsoft says the huge hinge makes it possible to put the battery and processor in the screen without the whole thing flopping over, but the whole laptop is still quite top-heavy. This is precisely the sort of compromise hybrid devices must make.
The Surface Book 3 makes a wonderful laptop. The keyboard is one of the best I've used (Microsoft's keyboard design across the Surface line is second to none), and the trackpad is one of the best you'll find outside of the ones on Apple's MacBooks. The 13.5-inch screen is another highlight. It's wonderfully sharp and bright with excellent color rendering in both the sRBG space and "enhanced" RGB.
Detach the screen, though, and new problems arise. Most notable is that there's no stand. Unlike the Surface Go 2 and other tablets, there's no included cover or kickstand here to help you prop up the screen. If you want to watch Netflix on the couch, you're going to have to get creative with pillows to balance the Surface Book 3 upright.