The screen is garbage and most of the second-hand fleet has the TN screen. The IPS screen was a rare option. The X220 and its immediate predecessors came out during the very embarrassing (for Lenovo) period during which they claimed it was impossible to source IPS displays. A few days after the X220 came out, Apple switched to 100% IPS displays across their product line. This forced Lenovo to change their tune.
IMHO the "good" laptops were from the era when Lenovo was still traveling on IBM's roadmap. The X61 Tablet had a magnificent display. As soon as Lenovo switched to widescreen designs, it was all downhill.
tablet versions usually came with IPS, I recently bought an x220t because the x220 screen is garbage. a missed a rare opportunity two weeks ago to buy an IPS panel for an x220 for 20€
IMHO the "good" laptops were from the era when Lenovo was still traveling on IBM's roadmap. The X61 Tablet had a magnificent display. As soon as Lenovo switched to widescreen designs, it was all downhill.