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Upgrade to a refurbished T450s or T460 and you get a very nice FHD IPS display.

but you lose on the keyboard...

X230 with a nitro mod https://nitrocaster.me/store/x220-x230-fhd-mod-kit.html and an x220 keybaord swap is my setup right now.

W530 with a keyboard mod.

IIRC, the cable needs to be modified, because the connectors are different, but I've seen it work.