In short I've been with OOTP since Version 3, so I've seen 3, 4, 5, 6, 6.5, 2006, and now 2007. Each and every upgrade, up to and including 6.5, I defended aggressively. When 2006 came along, I couldn't bring myself to defend it, even though I knew it was a work in progress.
But, 2007 is what I was expecting 2006 to be and more.
I don't think it's possible to be disappointed in this game if you liked anything about the versions before 2006.
Al