In college I took a survey of Modern Philosophy as a requirement for my major. The class was taught by a pretty renowned Kant scholar. I don't remember as much as I would like from that class, but I do remember one thing the professor said, "David Hume explained complex ideas with simple language, while Kant explained simple ideas with complex language."
It was reassuring that even the guy who wrote the translation of Critique o f Pure Reason that we were using in the class thought that Kant wrote in an incredibly obtuse way. What stuck with me even more is the idea that sometimes, "simple" ideas explored in such depth could be extremely valuable. I've been fascinated by Kant ever since, but lack the time or energy to read more of what he wrote. I would like to at some point.