I did initially not buy it with my current laptop. Something broke during the standard warranty. Got the motherboard replaced... With a faulty one. So they replaced it again.
Got a feeling that buying extended warranty would be a good idea. And indeed, 3 months past the standard warranty end, it refused to boot at all. And once again, got replaced with a (less) faulty motherboard (some faulty USB ports).
I'd have preferred not being given broken motherboards by the warranty service, but since I have no ultimate proofs, had I not bought it, I would most likely have been refused service.