I buy Dell Precision laptops running Ubuntu, with "next-day" on-site repair. It costs me a few hundred dollars for 3 years of coverage, about what I'd spend for AppleCare. Here's my experience:
- The Precision laptops do get more weird hardware failures than I'd like. Higher than one of the good Mac models, lower than some other well-known vendors.
- "Next-day" service in Vermont is usually more like a couple of days, because they often have a single technician covering Vermont and upstate New York, and they sometimes send the parts to the wrong depot.
- They really do send a technician in person to fix everything, for no extra charge.
AppleCare isn't too bad here. But the turnaround is often a lot longer unless I'm willing to travel to a big city where they have parts on hand. So Dell comes out narrowly ahead, in my experience.
I have a high end Dell Precision 7670 with their top NBD support option. The machine has been a shit show. Dell had no parts for it when it failed and took a week to find one. The NBD support doesn't always turn up on the NBD. It's more 2-3 days, if you are lucky.
Lenovo are even worse.
I had my XPS fans replaced just last month, in my living room, for free.
(UK)