If you wanted your comparison to be as lopsided as it sounds like you were thinking it was, you should've listed different companies. All three of those companies make high-end business laptops (EliteBook, Latitude/Precision, ThinkPad) that are absolutely built to last and have a cult following for it (ThinkPads especially). You should've listed Acer or some of the gaming brands to represent the ones that don't seem to last. I can say personally I have a ThinkPad X220T (Sandy Bridge) and ThinkPad T440p (Haswell) that are still working great. I sold a ThinkPad T60p just a few years ago that was still working as well, although it was showing its age with its 2GB of RAM and 32bit CPU (upgradable to a 64bit Core 2 Duo in theory).