I hated GoodLink when I was on it. It didn't keep a combined calendar/contacts database, so I couldn't use the built-in or 3rd party tools to work with them. That and it was sooooo unstable on my i730.

If you've got OWA, I'd just hit ActiveSync and "Configure Server" through the menu. No muss, no fuss, just use the OWA address and you should be up and running in no time.