Ideapad vs Thinkpad

I have used a Lenovo Thinkpad x1 carbon for a decade plus (through various iterations). However I am looking to move to a larger screen laptop and the ideapad has a much better price:specs ratio especially at the larger screen sizes.

I know Thinkpad are best-in-class build quality and that's what you're paying for but what does that really mean? Will I actually notice a difference on a day to day basis?

I'm basically using this thing to stare at PDFs and start flame wars on the ot fwiw.