Actually, I quite like the last album and Systematic Chaos, I found they warranted at least a few repeat listens, but it's most of the other stuff post Images & Words that I don't find too interesting and would go as far as to describe some of it as grossly over-rated.
For example, Metropolis Pt. 2 seems to be one of their most popular albums and yet, after multiple listens, I still think it's one of their worst albums!
Admittedly, said listens were a few years ago now but I can hardly imagine myself putting on the album right now and suddenly loving it! It's nothing against Prog Rock/Metal I have either, as I like plenty of Music in those genres.