I wouldn't trust the Sub-Zero fridge. I suppose I could feel somewhat safe with a refund/replace warranty (at my choice) with hefty payouts for downtime.
I went looking at high-end oven/range things one day, after having had the Samsung fridge experience. I noticed that underneath the fancy knobs they had the same crappy quarter-inch shafts as the low-end models. Some of the knobs looked like seriously impressive chunks of steel or brass... but that only put more weight and leverage on the standard-sized shafts.
I saw somebody take apart an older iPhone, maybe the 4. The phone had some really nice looking buttons on the side, machined out of stainless steel. Inside the phone it was a very different story: really flimsy crap.