If I wanted the laptop like you describe now I'd be looking at LG Gram, although I haven't personally used it. Dell XPS is also a solid contender. I've had a number of ThinkPads over the years but would not recommend one now, they haven't been worth their premium price for quite a while. I actually still use a Zenbook I bought years ago, now as my second laptop: although Asus is by far not the worst in terms of engineering, they stop caring about their product the moment it goes off the shelves, which means practically no driver or even UEFI updates. They should do better than that, particularly for a premium product: their pricing can sometimes be very attractive on the other hand, in the US at least.

In general, buying a laptop these days, especially if you are going to use it for work, I'd strongly suggest to consider the one with the best warranty policy, and I'd actually go as far as trying to find people's actual experiences with getting things fixed where you are located to see how cumbersome it is in practice.

On a separate note, blue screens could be caused by software or something as simple to replace as a faulty memory module.