What is Quick SpamCop?

The "Enable Quick SpamCop" option under the "Spam Cop Configuration" tab changes the reporting email from submit.{spamcop_id}@spam.spamcop.net to quick.{spamcop_id}@spam.spamcop.net.

The difference is highlighted here, but to sum up, quick reporting is used to report more quickly. It only looks at the source and ignores the body.