Help needed choosing new computer

I have an “old” Dell Latitude D830 that also has been quite reliable. During that epoch, Dell allowed an ordinary person to access both the repair manuals and the parts lists, and to obtain spares using the part numbers in the list. That was Dell then; this is Dell now. In all cases, I do not purchase a “consumer” “home use” machine, but one that claims to be a “professional” workstation (as is the Dell my wife just got and that is failing just after the base warranty period). I expect a “home use” machine to fail given the “pounding” one puts on the machine when used as I (or my wife) does. You may consider purchasing the extended Dell warranty, particularly the one that provides rapid free bi-directional shipping or on-site service (in the USA – I do not know about Dell outside the USA), as Dell no longer allows the consumer to purchase (most) spares – just as with Nikon USA today even for NPS members. I have read end-user reviews of regular extended warranty Dell service (not the “premium” plan), and these have not been re-assuring. It is rather like the difference between NPS, CPS, SPS, etc., and the regular consumer service provided by the same companies. (Leica I understand is much better with the consumer end, but I do not use Leica.) I hope your new Dell proves more durable than my wife’s.