Decide per project, before the first partner conversation.

Decide per project: keep control and grow slower, or trade control for speed. Founder-CEOs kept more control but, in startups, tended to build less value. Decide before the first partner or investor conversation.
P Evidence: promising. Good studies, but small or few. Use it and keep checking.
Wasserman 2008 · Fahlenbrach 2009.
Not medical, legal or financial advice.
In The Ecosystem every framework comes with a daily action, a room that checks in, and the full library.