KO abilities or OSA

Which is the better ability setup for CBs in a man defensive scheme:

short route KO, medium route KO and deep route KO

or

one step ahead?

run both pat pet can have deep route and OSA which is the best duo you could use or inside shade and deep route

If running purely man, then you need both realistically. Doesn’t mean you need both on each DB, but KOs are likely more useful on your outside corners and OSA is better on slot DBs.

OSA still going to get burnt on certain routes