I have both, and I like both (in a library of 10k books in different languages). Umberto Eco still makes sense, I crass contrast to a lot of literature price recipients.
Hard reading is not the issue. I actually liked how "The Name of the Rose" dropped my reading speed down to a hundred page per hour.
What I regularly notice in books rated high in literature circles is lack of internal integrity. Those people have not a single molecule of world building in them - they don't really think about what they write.