For me it's the Lenovo T61 with a 14.4" 4:3 display (or any of the older 4:3 IBMs). Yes, compared to modern laptops it is heavy, slow, bulky and has a shitty display but: i) I can replace every single piece of it with a simple screwdriver and ii) 4:3 is still the best aspect ratio for reading and developing. If I am doing the latter I prefer a screen with a lot of height. A 4:3 aspect ratio gives me a tall screen whi…
I'm a big Thinkpad person, too. Had and loved the W530. Now I have and love the P50.
95% of the time I'm using the workstation on my desk but when I'm not I almost always reach for the W530. I've probably only touched the MBP three or four times in the last year or so (since I built the workstation).
I absolutely love the W530! I've had it for, I think, about 4.5 years but it still has twice as much RAM as the MBP (32 vs. 16) and a pair of Samsung 850 PRO SSDs in a ZFS mirror. It is a beast of a laptop (considering its age) and it takes a beating riding around in the saddlebag of a Harley-Davidson.