I have used all of them, and have posted a review of magic bullets at
http://www.videoforums.co.uk/reviews...2_articleid/76
The first two on the list are the only two that are specifically designed for colour grading - the other two are perhaps overkill if this is the only reason you are buying them.
More to the point, what exactly are you looking for when you say 'film look'. I took this to mean colour grading, but you might have meant something completely different.
What are you aiming to achieve?