Would this link be helpful?
http://en.wikipedia.org/wiki/Comparison_of_file_systems

I don't have any specific info to give you and I'm sure that most are better informed than I.
Searched a little on Slashdot for 'file system' under the Linux index for you, but didn't find any conclusive articles.
I'm sure I've seen posts on slashdot regarding this topic (slashdot being a haven for Linux lovers, afterall) but my search-fu isn't strong tonight.