I was just reading about this in another thread.
https://forumserver.twoplustwo.com/1...fense-1683556/
A 5x open from a loose-passive is never a call from either blind and especially not from the SB. SB != BB.
So it's always a 3-bet or fold with the ratio being dependent on 1. BB player type, 2. Stack sizes, 3. V player type.
I need to work on this in my game too when it comes to hands like QJs, ATs, etc etc.