I started with a German brand a few years ago but finally mustered up the courage to buy a good Japanese one (Zojirushi seems to be the market leader these days). I imagine that it tastes a bit better now but honestly even most of the cheap rice cookers produce quite good results. Recently Xiaomi introduced a series of rice cookers which have really nice induction heating and a really heavy, solid cooking pan, unfortunately they have littered them with "smart" functionality, so it's nothing that I want in my kitchen.