There's not going to be a single company that can compete with Dell's after sales support, well for Monitor at least.

Where can you get ONE TO ONE, 0 dead Pixel, Next business day, EXCHANGE Warranty, for 3-5 years (depending on Model).

Dell is telling you that, "We promise perfection. If you see a single dead pixel on our panel in the next 5 years, call us with the service tag behind your monitor. We will send our courier to come to your house, pick up your monitor. You do not need to provide the accessories. We will deliver a replacement monitor to you at the same time."

With Samsung? You need to personally take your monitor to Samsung service center, take a number, sit down, wait for your number. Explain to tech support what is the problem you are facing. Leave the monitor there for diagnostic. Drive back home. Wait for SMS from tech support. Go back there upon notice, collect your monitor, and pray to god that it is resolved. If not? Rise and Shine, repeat all over again.

This does not just apply to Samsung but also other brands.