Biggest advantage to the new 9370 is size. It's super small. Closest high performing compact that's nearly as small as the 12" Macbook. But way faster. The Macbook has a better trackpad and speakers though. Everyone complains about the webcam position but I couldn't care less because I never use it, and the reason why it's there is to preserve the super thin bezel around the display which IMO looks outstanding!
The fan is there and becomes audible but not super loud or annoying. It makes more of a whoosh noise than say a whining noise which most will find more pleasant.
As for throttling, all of them will throttle under heavy load. No way to get around this. The Surface Book 2 seems to throttle less but we're talking about a very heavy load like rendering or big video encode projects which ultraportables aren't really designed for. But they can be used in a pinch like when you're away from home
for you main workstation goes down, etc.
The UHD display is also best in class. Easily beats the Yoga 920 and Spectre X360.
The onboard SSD is user replaceable but the RAM and wifi card are both soldered to the board. And like Apple, they seem to be cutting back on ports so you will need dongles. Good news though is the thunderbolt 3.0 is full 40Gbps so you can add fastest external devices, external GPU, etc. My 85W Macbook Pro USB-C adapter and cable charges it fine. The included charger is also USB-C but I wish the cable unplugged from the brick (which is pretty small!) like Apple does because if you break the cable you have to replace the entire adapter.
BTW, the variant I have is the maxed out one, i7 8550-U, 16GB, 1TB SSD, UHD Touch display. Microcenter has them for $1799 which is the best deal currently and it's not an in-store only item.