I abandon roughly as many books as I finish and can't name any in the uncompleted read category that stand out.
One I recall finishing, despite great boredom, is
One-Dimensional Man: Studies in the Ideology of Advanced Industrial Society by Herbert Marcuse.
An aquaintance of mine is a graduate of St. John's College, where every student is assigned the same
list of great books. When I told him I would have difficulty finishing many books on the list, he told me he can read anything. I believe him and admire him for that (and other things).