I also am still using a Thinkpad X220 from the same era and have had zero problems with it. I did replace the HDD with an SSD at one point just from a performance aspect. I am starting to use a 3rd gen X1 Carbon but still really enjoy the X220. I still have an X61s I occasionally use as well. The X61s also has an SSD now and upgraded RAM and it will handle most tasks I throw at it. Unfortunately the battery doesn't last these days. Interesting how many Thinkpads are listed here...