I bought the P16S AMD Gen 2 with 64 gigs of RAM. It was about $1600 a year ago.
It was one of the few laptops I could find that wasn't absurdly expensive and had a 4k screen, so I was kind of pigeonholed into it, but I've been really happy. It was one of the easiest Linux installs I've ever done, and it's been holding up fine. The only thing I don't like about it is that the speakers are kind of shit, but for a laptop that doesn't bother me too much since if I want to listen to music I probably wouldn't use a laptop speaker regardless.
It was one of the few laptops I could find that wasn't absurdly expensive and had a 4k screen, so I was kind of pigeonholed into it, but I've been really happy. It was one of the easiest Linux installs I've ever done, and it's been holding up fine. The only thing I don't like about it is that the speakers are kind of shit, but for a laptop that doesn't bother me too much since if I want to listen to music I probably wouldn't use a laptop speaker regardless.
[1] https://www.lenovo.com/us/outletus/en/p/laptops/thinkpad/thi... I'm not sure they sell the 64GB model anymore.