Why would you use other people opinions of the game to form your own? If you are excited about the game, then buy it. There are too many different factors involved with everyone's individual experiences.
Edit: Also, you will still need the DVD to install. Just having a Buddy Pass won't do anything for you.
Edited, Sep 30th 2010 2:39pm by Teneleven
I always use reviews, forums, comments, opinions or anything at my disposal to help me decide what to play. :) I tend to do this even more so with MMOs. The opinions of FFXIV seem split right now. People either love it or hate it.