Of the modules on your list, I have Durbenford and Grey Citadel. I am currently running Durbenford. I have to say that while I'm loving it in some ways, other ways not so much.
It's good in that it appears like the author climbed inside my head and wrote out just the kind of stuff that I enjoy. Interesting characters, sub-plots, etc.
It's not so good in that it really almost looks like a brain dump to me. I've had to jump around through 3 or 4 sections just to get info on a single interaction for the PCs. I've put them into a section of the module and realized that it needs to be waaaaaayyy more fleshed out. I've even found myself writing up little snippets of text to read because I felt that what was in place was unfinished. To some degree, the author would probably say, "Hell yeah write your own stuff, that's not what this module claims to offer!" But at 200+ pages and a real price tag, I kinda want that.
So I selected Grey Citadel. I've not run it yet, but was fascinated reading it cover to cover. Own it in PDF and paperback, legally paid for both. I was *planning* to run it next, but I'm hearing such good things about Vault of Larin Karr, I might just run that next. Since they're almost at the same level, I'm not sure I can squeeze both into my current campaign.