The perfect thing you are looking for is a Thinkpad of the T4XX series (even if it seems you want to get away from Lenovo). Why? Not because nothing ever breaks

The perfect thing you are looking for is a Thinkpad of the T4XX series (even if it seems you want to get away from Lenovo). Why? Not because nothing ever breaks - but because they can always be repaired and every part is available for replacement at multiple outlets (eg Amazon). All parts are mounted on a big magnesium Chassis - and you will find out why this is a good thing if you ever work on it. I personally own a X240 and hope I can use it for many years. Had to replace the keyboard (Beer...), but it was doable. Repairing the Samsung I had before could become a bigger issue because of the low material quality.