I have a retractable and standard leash. I only use the retractable when we are outside in my own yard or in a safe area. I use the standard on walks and everywhere else.
I really like the retractable but I get so nervous that one day it will just snap. I had Lily on the retractable leash once and she ran around me in a circle, my hand slipped and the leash wrapped around my arm and sliced me.

It was almost like a burn and now I have a huge scar across my forearm

I'm more careful now.