marketcircle: Billings Pro.
I bought this a short while ago, and like it very much. Making it multiuser makes it better. Price is a little high for Pro, IMHO - they should offer a limited-user version for a price point between Billings and Billings Pro.
One personal observation: The templating system for invoices is confusing and needs much better documentation. Trial it and see if you can construct invoice templates with your business ID satisfactorily before purchase.
Page 1 of 1 pages
