regardless of the camera, most important thing to think about is the total wight the tripod will hold, if you're carrying it for long time (think Carbon ones if your budget allowsit), and what kind of shooting you're doing the most (for macrophotography for instance you will for sure need more flexibility).
Only ou can decide which one fits you the most. but one advice : we all think at the begining that spending quite a bit on money on a tripod iskind of waste of money while you can save for other stuff (what stuff : LENSES of course
). do not get fooled, your tripod will follow you for long long time. and quality really matters.
go manfrotto or Gitzo, GO carbon if you can
regards
Khalid