Um sorry but I really liked Dhalgren and Gravity’s Rainbow and Infinite Jest. I may actually use this list to find some new books to read.
For instance I abandoned Lord of the Rings. In my view it's poorly written, boring, long-winded and to difficult to follow. That hardly means that it's a bad book, it's just not for me.
The book is obviously too long and it becomes boring at places but there are certainly extraordinary passages (in style and in feeling). But as with Wagner’s operas, delight comes at a price.