combustion chamber question

I have read that the ideal Q is about .035
I have read that less than .020 cold can run too tight, hot.
I have read that more than .080 is not detonation prone, but helps nothing
I have read that from .050 to .080 is a bad place to be
I have run .030ish in one combo, and .034 on another; both with excellent results

The man who runs as in post #6 above also ran a tight Q. If I could remember his name, I would post it. IIRC he was running over 200psi on aluminum heads.