I didn't read Haunted because it just didn't click, like I said..I've tried a couple of times because I've got every other book he's written sitting on my bookcase, but it's just not happening unfortunately.
Less Than Zero I want to read because I've just read Lunar Park and loved it, and it's the only Ellis book (Well that and the Informers, which is also being ordered) that I've got left to read.
I should probably point out that I have read and enjoyed a lot of other types and styles of books (including a few penguin classics

) the writers I mentioned are my favourites, but I am willing to branch out.