Well, the rate of failure is the lowest compared to other manufacturers. And those repairs are way too expensive I should say.
White Knight dryers are surprisingly good, yeah. The LG washers work fine for 3-5 years, their weakest point is the suspension (really hard to replace) and the drum bearings/spider (irreplaceable), especially if you overload them.
Staber washers are supposedly made with industry-standard components (seals, bearings, motors, etc.) so if they fail you can get replacements from any mechanical parts supplier.
The drum was a point all the repair guys brought up for basically all washing machines because all the modern ones are welded or something. Essentially they said they are terrible for repairs compared to the old style (which I presume weren't welded?) but the benefit to the newer setup was less leaks (or words to that effect).
I've got an LG direct drive. The bearings failed after about 6 years. The repair ended up being about $250(US). They replaced the stator, rotor, drum, and bearings (essentially all the moving parts of the appliance).