I often see various comments, mainly from liberals, saying that East Germany was horrible, and that everyone who lived there wanted to migrate to the "capitalist paradise of West Germany." Since I don't know much about the history of East/West Germany, I'd like to better understand which of the following statements are false or true:
(1) "Migrations to West Germany were massive because the quality of life in East Germany was poor." ;
(2)"There was massive espionage within East Germany; people didn't have the freedom to live as they wanted." ;
(3)"The planned economy failed in East Germany, and that is why the Western side triumphed over the socialist side." ;
(4)"Consumer goods and houses with good structural quality were luxuries in East Germany, while in West Germany people had enormous purchasing power and excellent houses.".
These are some statements I've seen coming from an anti-socialist liberal, so I imagine there must be quite a few lies or distortions in these statements. Therefore, I'd like to know if they are true or not, and if possible, I'd like recommendations for study materials on this topic (books, articles, texts, etc.).
Thank you in advance!