The battery life of this laptop is truly phenomenal. This, in combination with the speed and the ultra-quiet system (the fan hasn't turned yet), makes this a real winner. The MacBook feels just like an iPhone/iPad when you take it out of standby. This is just instant! In the future, the MacBook will only get faster as more software is compatible with the new arm architecture.
Do you use 2 external monitors in your workflow? Then this MacBook is not really suitable for you. You can directly connect only 1 external monitor to it. A 2nd monitor is possible, but you will need an external display link adapter/dock for that, whereby the image quality will be slightly less. I also think that the design can be changed from time to time. It seems that Apple will not come up with a new design until 2021.
All in all, it's a great laptop. So just buy!