Dell has always had good support, especially for business. I once bought a laptop second-hand that still had a few months of their highest support plan on it. Needed a screen first because of a few dead pixels. They had a tech come out to me at work and repair it on-site. A month before the warranty ended, the motherboard died. Same thing, replaced on-site. In both cases they offered to either send me the parts and DIY repair instructions or just send someone to do it. This was on a laptop I paid like $300 for (probably $2-3k new back then, it was a nice Latitude).
I’ve had their enterprise support on the phone with me for a dozen hours over the course of a week trying to get this SAN working. Their support remoted into it and had me manipulating physical stuff when required. They eventually got it going through a combination of hard resetting everything and updating firmware on half a dozen components + some software updates.
Dell doesn’t always have the greatest hardware, but their support really doesn’t rest until you’re satisfied. “No one ever got fired for buying Dell”.