One aspect that is in favor of Clozapine and against Haldol is the risk of TD. TD is something that scares me a lot because I have had acute dyskinesias, Parkinsonism, a lot of EPS, and all of that makes me predisposed to TD. So Haldol is much more likely to give you TD one day than is Clozapine. Clozapine in that department is quite a benign drug.

There are, of course, a lot of negatives with Clozapine besides needing regular labs. It can give someone really bad constipation. There have been lethal cases from intestinal blockage. FDA strengthens warning that untreated constipation caused by schizophrenia medicine clozapine (Clozaril) can lead to serious bowel problems | FDA

So you have to be on top of that with Clozapine, really vigilant and taking measures.

Clozapine did not work for me because it made me depressed to the point of inability to move my feet to walk, at the lowest dose. But it works wonders for some people.