I’ll say that the thinkpad line has fallen off since IBM sold out, but the build quality is still superior to all general consumer grade model competitors and a good chunk of business grades too. Cosmetic durability varies. Upgradability is usually a hinderance across like model competitors, but still has comparables & often a few nice added touches.

Solid processing is too subjective. An i5 is sufficient for most people, memory & storage media is usually the bottleneck, not cpu. 32gb ram or bust. Word processing isn’t intensive in any form.

Buy it used on eBay or, ideally, from a nearby electronics recycler - new laptops are a racket.