I can't rate 6.0 but I can tell you that the 5.0 version stinks! I use it at work and it absolutely drives me nuts! I am actually going to switch jobs because I refuse to get stressed out by a database. It moves sooooo slow. Contact card changes but notes and history doesn't. I liked it at first when it was quicker but no one seems to know why this is happening. Notes disappear, it has it's own mind!