I've used my Benriner
for 10 years already -- the screws have rusted a bit but they still turn, and the platform is a bit off kilter, but it has NOT fallen apart. It still cuts just fine, both the straight slices and the various widths of julienne. Should I need them, this same source has replacement blades. And I can put the whole thing in the dishwasher.
To be honest, I never, ever use my big, fancy, expensive French Bron mandoline. Too much trouble to set up, and too much trouble to clean.
ETA: contrary to what Phil thinks, restaurants do indeed use the Benriners; the main problem with them there is that people lose the blades. But really, the equipment holds up well!