Motorola:
It was the only company which used to provide great budget android smartphone with stock android and regular updates. (ranting this on my Moto G3) But from moto G3, they fucked up with promised android OS upgrade (shitty Lenovo)

Microsoft (for fucking with windows 10):
Still remember that first stable build of windows 10 released in 2015. After the first update they never stopped fucking with user's computer with different bugs. Still I haven't seen any build as stable as first one.