You may get some more tailored replies if you could explain a little about what you're likely to be doing, e.g.
How many photos you'll be organising
1000 +
What camera(s) you have
#1 Astronomical CCD #2 Cannon MarkV
Whether you shoot RAW or jpeg
Raw and (Fits 32 bit floating point)
What skill level / amateur/pro/semi-pro
Amateur
What you'll be doing with the photos e.g. own web site/photo sharing/printing
all of these, plus I usually have a backlog of touchups or processing in progress
What computer(s) you'll be using
See my sig line
etc.