Apparently if you don't kiss Rob Zombie's ass at all times (and the asses of his undemanding fans), you aren't worthy to write about his films ...
My IMDB rating (2/10) and review
You won't miss much if you skip "Rejects" and just watch House of 1000 Corpses
The saddest part about "Rejects" is that Zombie demonstrates in his dialog that he can be a good writer. I suspect he could become a very good movie maker if he stops being lazy and applies himself to some really good writing and production.
But his groveling fans don't expect much more than what he's given them in "Corpses" and "Rejects" - thousands of "yes" people don't bode well for improving an author who could do better.