Probably a non-sequitur but I serviced HP gear a few years back when we held the contract for both Sun and some HP gear at a few customers.
Some really neat design features. I liked the idea of field programmable logic instead of having to replace components if there was a hardware design issue.
The downside was additional complexity when doing firmware/microcode updates. The cell based servers didn't seem as flexible in some ways as the Sun gear I know and love. I could do more service on the Sun servers while keeping the server running than I could on the HP gear.
Every vendor has it's pluses and minuses. Many of the components were the same hardware, such as network cards, fibre channel cards, disk drives, with HP (or Sun) specific firmware.
On the consumer side, the HP desktop I purchased from MicroCenter has been rock solid. It was a refurb and it has run for the past two years without drama. I've added some additional memory and disk, but other than that, no reason to open the case.
Far better than the brand new Dell I purchased a few years before that.
But I agree, at the consumer level, I think you have a much higher chance of debilitating failures. Not just due to the lack of redundancy, but the other compromises to meet a price point.