A GREAT film....but, THE best?

Rating: 8/10 (27 January 2003)

I saw CK for the first time last nite. I, too, was impressed by the story, camerawork, acting, etc. But, i don't think that i would say that it is "THE best film of all time".....ONE of the best, but how can ANYONE reduce it to ONE?
"Gone With the Wind", as good as it was, is much too long; "Wonderful Life" is terribly depressing, and films like "Man Who Came to Dinner" are extremely overrated. But, out of all the films i've mentioned, CK is THE BEST!
Without giving it away, what was meant by his last word, "Rosebud"? I know WHAT it (physically) is, but was the reason it was so important to him a reminder of simpler past, which he secretly longed for all his life? Or, am i mising something here?
I'd appreciate it if anyone could enlighten me on this, as i'd like to make sure that my interpretation is correct.
Thank you, Norm Vogel