I don't like it at all.
The UI stinks (personal preference obviously), and it doesn't sync emails properly.
For instance, I synced my AIM email.
It only partially syncs email folders. And by partially I mean it won't sync anything within the past 6 months. It doesn't let me send email. Nothing new shows in it. It doesn't let me do anything. Yet it's synced and working? Don't think so.
I'll just stick to the web based apps or my iTouch and Phone. LOL.