My rice cooker is this Cuckoo model, which I've had for a quite a few years. I swear that when I first got it the rice it cooked was way better (back then I thought the rice was delicious, now it just seems average and unremarkable). I mostly use the same brand of rice - Hinode Calrose white medium grain - so either the cooker's getting worse or Hinode quality is decreasing. Does this happen to rice cookers: that the quality of the cooked rice can decline over time and they need to be replaced?