I have got to agree with this.

Until 2 years ago I thought I disliked cheddar as a cheese because I had only tried the "swiss version" (Migros or Coop) but then I tried an organic cheddar at my sister's house in Wales and really liked it. It's then that I realised it isn't cheddar I disliked but industrial cheddar.

I am pretty sure you can get sour cream in Migros and Coop. It is called "Sauerrahm" in german, "Crème acidulée" in french.