I have been looking into purchasing a Power Mac G5 (either dual 2.0 or 2.5). I edit photo and video so this seems to be my best option. I have a few questions though: 1) One of my friend's is also looking at getting a G5 and her dad told her that the dual 2.5GHz isn't a 'true 65bit'. Is this true and is he right that the dual 2.0 is the better option? Thanks!