Oh I'm not a huge Fulci fan but I do enjoy his movies and I AM a underground horror fan. my favourite from Fulci yet is obviously Zombi 2. I've recently seen Don't torture a Duckling and the New York Ripper, and I think I enjoyed ''Don't torture ...'' more. I've seen The Beyond too. that was cool.
The thing about Fulci's movies is, there's always some things bothering me that I have to disregard to enjoy the movie. like bad acting. or unlikeable characters. or a boring scene. or some very bad dialogue. So IMO they're all fun movies with flaws. Flaws that become part of the fun I guess because I keep watching them anyway. I used to watch a lot of ''so bad it's good'' horror movies and Fulci's movies, I think they have one foot in that territory.
I prefer the new york ripper soundtrack to the movie, but I did enjoy the movie.
