Great discussion - the Angel Capital Education Foundation (funded by the Ewing Marion Kaufmann Foundation) is currently performing the research to help clarify definitions for Angel Investor and Super Angel. My organization of angel investors, BlueTree Allied Angels, ( 21 investments to date ~ $14M) is a founding member of the Angel Capital Association, where we expect member groups to ensure that their investors are active investors and conduct themselves professionally. The ACA information and research to date demonstrates that members of our groups minimum investment per deal is ~ $25K and average amount per deal from a group is ~$260K. This varies from region to region, i.e. amounts are much higher in Silicon Valley groups than in the Ohio groups. I genuinely appreciated viewing all the discussion on this topic.