I have read some of the Koran. It wanders all over the place with the only real link being that of Muhammad talking to or overhearing different spirit. This at least was the areas I read. Some verses seemed to have depth and understanding most of which had an equivalent in the old testament or some ancient sayings. Nothing new or truly revelatory. I didn’t read more than say 5% but that was enough. It rambled!
The best I have read to date is an anthology, edited by Al Fadi, *Qu’an Dilemma*. It speaks the truth and is a beautiful book.