[r3m6]

In addition, an important part of Aldi's recent success in Germany is that they do not compromise on quality. Often their products (say olive oil, toilet paper,...) win/score at the top of consumer reports. They have a great brand image (much better than Lidl).

[Mithaldu]

That depends on which part of Germany you're in. There are two Aldi chains in Germany, run by brothers. South Aldis are great. North Aldis are understocked, dirty and generally don't provide a great experience.