"Inferno" is a good "Hellraiser" film because it is both different and interesting. I love detective crime thrillers and this film (like the first "Saw" film which came later in 2004) have some of the best detective/horror elements I have seen. Craig Shefffer is a great lead actor and is met with an equally strong supporting cast!
The best part of the film here is it combines classic "Hellraiser" elements (Pin Head, sin, morally questionable characters, sex, pain, pleasure) and combines it with the thriller type crime story - I believe the result is very effective and very entertaining. The ending is a very very memorable example of evil winning the horror film and living on.