I did try the beta, and I really liked it, mostly because of the changes from jumping 2003 to 2010, mainly positive.
The new features put in to most of the applications, in my opinion, were long overdue. Word has improved navigation, which I really adore, Excel has that new pivot stuff which makes things somewhat easier to manage, especially on my herb runs.
And so on.
As for getting it, I guess I'll wait for a good discount offer to come my way, beta doesn't end til Halloween anyway, and there's not alot of bugs,
unless you link Outlook to your Windows Live ID. Ugh.