I've been working on a P50 since 2016; It is holding up.

Flaws:

- There is cosmetic degradation

- The laptop is gradually losing hassle-free hardware support from the latest popular Linux distributions. (Trackpoint crashes randomly in Ubuntu; Sleep/power management has never worked properly).

- I had to replace the keyboard after 3 years (the keys mechanically wore out and became loose). I had difficulty finding new replacement keyboards recently (although this is more an indictment of the UK's trade situation).

- The buttons on the main touchpad are slowly failing; Near as I can tell it isn't possible to replace these without replacing the entire "top case". I use an external mouse to slow the decline.