Having read these, I do wonder whether, if they ever are traded, 99% of the people who buy them will be completely underwhelmed.
Not that they're bad reads -- at all -- I just wonder if they'll live up to the chatter.
Yer right, hype/ chatter is a killer and usually if not always kills enjoyment- usually to the point where you're no longer sure whether you enjoyed something or not [I still don't know whether I liked RIP or not- it was interesting and stimulated thought but did I like it? I don't know. That said, similarly having bought and read both of the books you mention, I have to say that I absolutely loved both of them- I'm sure Final Crisis makes more sense if you've read Flex Mentallo and Miracleman makes an excellent counterpoint to Watchmen.
As a person who hasn't read them (unfortunately), after what I've heard about them, I do expect these titles to pay off my home loan and take 3" off my waistline (and put it you-know-where).

Jacob, not only will these books do the above but they're also a well known cure for male pattern baldness.