Dell's rack servers are one of the rare servers which refused to die under continuous heavy load (HPC).
Their R815s after eliminating the early failures (leading edge of the bathtub curve) just trucked on. I used to run an OpenStack cluster on top of them till last April or so. At the end, either the CPU power regulators died, or their RAID cards just called quits. No other errors after 10+ years of service.
We also have their newer CPU and GPU servers. They just work. Scream occasionally due to high load, but not overheating or dying.
Counterpoint, running Dell R430 rack server for nearly ten years -- in that time a single SSD in raid 10, 8 disk array, has failed.
Maybe I got lucky?
Similarly, my last three laptops have all been Dell Precision -- only issue until I switched to Intel integrated gpu was Nvidia on Linux (black screens, laptop attempting liftoff due to gpu heating issues) causing periodic grief.
Also, for the author, Dell Precision provides advanced BIOS options out of the box, something that their consumer line of laptops probably doesn't offer.
We had 4 Dell Itanium racks (circa 2003) all fail with the same exact power-supply overvoltage issue over the course of 4 months. Maybe we got unlucky.
Dell's business laptops are pretty solid, as are their tiny form factor PCs. I'd advise against Dell in regards to anything geared towards consumers, but there are many good things in their business offerings.
Previous gen Dell laptops at my workplace had issues with expanding batteries. Newer ones don’t, but are made from really cheap plastic, and have bad battery life.
I would definitely avoid their laptops and get Thinkpads instead.
They couldn't even get their touch-pads consistent (https://news.ycombinator.com/item?id=41992784).
I have very few generic vendor sourcing advice when it comes to computing hardware, but "Nobody ever got fired for NOT buying Dell." is one of them.
Just don't.