What's the maximum BC you'd be willing to accept from a woman and what is your reasoning?

Keep in mind, one woman could have had a BC of 4 but all were LTR's, the other could have only 2 but they were ONS's. So there is more depth to the equation than pure arithmetic. Then also, both could have the same number and one has been banging weekly, while the other monthly, et cetera. What line does it take in your mind to be considered "for the streets" and "for the sheets"?