I have used SEAB for a while on Office 2004, and it was mostly ok, although the fields have never quite fully matched, particularly the Entourage categories get lost on their way.

Since I have switched to Office 2008 I get a weird error:
"The variable abperson is not defined. -2753"
so it became very unstable, can only sync one entry at a time, with an average time of over 5 minutes per sync.
If like me you have over one thousand entry, I let you do the math...

I have emailed the developer a few times asking for help several time this month, but no reply so far. Paul, where are you??? Talk to me...

Since I would prefer to stick to Entourage for email/address book, but want to buy a new iPhone, being able to sync would be critical.

An ideal solution would be to sync directly from Entourage without having to go through AB, however even with a direct conduit I would still want to take advantage of my .mac account, so SEAB is still very much needed.

Hope Paul will come up with a new version very soon.