I have a Samsung ultra lux 128 for at least 6 years now, and it’s been holding up perfectly. Only the metal sheet above the port got bent a bit.
https://lemmy.world/pictrs/image/cf1b2638-a88c-4e46-b67f-49bdc29f09e5.jpeg
so I had to bend it back with a screwdriver, however it actually does lay flat
https://lemmy.world/pictrs/image/e4430220-a86f-4261-bf8d-69b39004e97d.jpeg
next to keys which is pretty nice
Proprietary spare parts. The motors might be off the shelf so you could grab parts from a different manufacturer. But controllers and batteries are usually proprietary making repairs much more complicated and cost-inefficient