Okay, so which are the four you didn't like and why?
Well, 3 are a trilogy by an author I frequently find does very dry, unoriginal and generally very basic and predictable adventures who in my opinion only gets sales due to his historical significance to D&D.
The 4th was done by someone who is much more famous now, and I do not like it simply because I do not like clockwork creatures, but I know many others who hung out on the Necro boards liked it a lot.
The modules done by Lance Havermale have a number of game mechanics issues, but he has great ideas, and is one of my fav module authors for Necromancer Games.
All of the adventures released via Kenzer were real good, original, or quasi original with kewl new twists, and well worth hunting down.
Frankly, I found lots of great ideas in pretty much every module done by Necromancer, and they were my favorite module company for 3E.
However I have seen a lot of people disagree with my opinions about several of the modules, so all I can say is I bought every single module, often 3 copies of each, because I think Necromancer Games put out the best modules in 3E.
I base this not on mechanics accuracy, because there were a few errors in many products, I base this on fresh ideas, or old ideas with cool new twists, that simply led to great games.
I also highly recommend Patrick Lawingers "Morrick Mansion".
Also make sure to get "Lost City of Barakus" and I see you already got Bards Gate and City of Brass.
If you have Rappan Athuk you have to get Tomb of Abysthor, they are interconnected, and well worth using that way.