I'm still happy with the high-end Lenovo ThinkPads (currently using a W541) - not as awesome as in the early 2000s but still very solid, well-built, great keyboards, matte screens (but check if you mind this, I'm not sure if every model has them) and with trackpoint, which becomes a must when you get used to it.
I'm glad you've found something that works for you. I've had to use the W520, W530, W540, and W541. And sorry to be so negative, but they all suck. At least the W541 doesn't have chipset errors like e.g. W520 (x2APIC). But for 2016, I find the W541 behind times. So just a heads up to others on HN thinking of buying.
It's a huge, bulky machine that still manage to feel like cheap plastic. The trackpad is awful. It has all the obsolete ports you'd ever want, but no HDMI. The screen is okay, but 1080p. It's so heavy and unnecessarily large. The big battery pack sticks out of the back and means it won't fit into many laptop bags. And they're shockingly expensive.
Finally pulling the trigger on a 17" System76 Oryx Pro today with baseline specs aside from the screen and graphics card. It's got so much room for expansion that I'm comfortable looking at it as a 10 year investment. Going up to 64GB and room for 4 HDs, makes it a very comfortable futureproof purchase.
