I have a few repurposed ancient Thinkpads running Mint in the field. They're used primarily as thin clients to remote back to the office. So far, so good. Everyone seems happy with them. No tech support calls/tickets on them in 3 years now.

Currently typing this on a client's Windows 11 Asus Zenbook which I've had for about 10 months now. And I hate it, specifically Windows 11. Very buggy. Just blue-screened on me tonight. Forced updates are still a thing. Many random glitches. Windows would really benefit from a re-write at this point.

I'm in the same boat. My 14 year old Macbook Pro (mid-2009) is on its last legs. I'm also looking at going to a Lenovo Thinkpad, although not sure which series yet. I like the X1s, but the Windows 11 experience on the Asus has been abysmal and makes me wish Apple weren't so anti-consumer with everything soldered in. Still haven't pulled the trigger yet.