I bought an expensive Samsung microwave thinking it would outlast the cheaper ones. The thing actually started to rust in the first few months something not even the cheapest microwaves have done on me.
Last Samsung appliance I’ll ever buy luckily I’m in the UK and got my money back.
I had a ZX Spectrum + and the keyboard was pretty decent was much better than the rubber of the normal one. The Sinclair ZX81 probably takes the cake for worst overall as it was just a very thin membrane.