Let me improve a quote from the film for you:
"You are not your job, you're not how much money you have in the bank. You are not the car you drive. You're not the contents of your wallet. You are not your fucking khakis. You are not your bullshit political beliefs. You are all singing, all dancing crap of the world." (Thanks for the new signature idea lol)
What does the Machinist have to do with anything? Just a movie about an anorexic dude who feels bad about running over a kid or something. Sure it was neat, but not even close in terms of mental stimulation and meaning compared to Fight Club. I enjoyed the scenery in the movie (machines, airport, atmosphere, etc) much more than the story because it was rather dry and dragged out too long for what it was.