IMO, XSForms allows you to create the most versatile PPC-based forms. As far as transferring to Outlook, are you referring to importing the data into a custom template of some kind? You can export data from XSForms in a variety of formats, so it should work for you.
Go to www.grandasoft.com
to get the free/demo PC Designer and PPC Forms. You can give them a try to make sure they'll do what you need.
Also, I'm working on a review of the Pro version, so stay tuned and ask any other questions you might have.