Ask HN: What's your coding setup like?

I'm trying to improve my coding setup - both in terms of productivity and comfort.

What I currently have is a high-end macbook, which I use both in the office and at home, and very occasionally in bars or eateries. This has worked for me for years, but I'm starting to notice wrist pains and eye strain that weren't there before.

I've read conflicting accounts of using exotic external keyboards (such as typematrix or das keyboard), large external displays, curved or not, with high contrast or high dpi or both... no one quite seems to agree what the best (affordable) setup is.

What setup do you use, what have you tried and discarded, and why?