Now I seei, I haven't given any recommendations
I second the Malazan Books, but with the warning, that they are much more complicated both in plot and style, than anything on your reading list and with the usual caveeat, that the first book in the series is maybe not the best entry, so the second book is recommended)
"The Song of Ice and Fire", would be my second recommendation (but no or very few wizards in here
).
Joe Abercrombie is also excellent, but he too is light on wizards.
Even if you know the movies, read the Harry Potter Books. Your reading list sugests that you will love this books.
Since you seem to be german, I will recommend at least one german author: Walter Moers. He is brilliant. One of the best fantasy or phantatstic writers alive. I know, his comics are debatable, but his books are just genius. I recommend "Rumo", for it is the most "Fantasy-like" book of him. But "The City of dreaming books" ("Die Stadt der träumenden Bücher") is equaly brilliant.