Since april 2021 I've been using a Thinkpad X220. I upgraded it with 16Gb ram and a 240Gb SSD hard drive. Really happy with it, solid well built no-nonsense laptop.
But I have a growing problem, the 12" 1366 x 768 is a bit small for developing web sites, and my eyes aren't what they used to be.
So I've bought another old Thinkpad, this time a T430. It has a 14" 1600 x 900 screen.
Upgrades: 16Gb ram, a 128Gb msata hard disk, a 480Gb SSD hard disk, and AC-7260HMW wifi card.
I'll upgrade the Bios with 1vyrain to unlock the limits of Ivybridge laptops and install the AC-7260.
It's also possible to upgrade the screen and processor.
People tend to fall in love with these laptops, because their build and upgradablilty have never been bettered,
and where else can you get a Thinklight?
(Framework laptops look nice, but an older Thinkpad is waaaay cheaper!)
A few links about this machine: