It's easier on me to use the non-retractable. I can wrap it around my wrist, and keep better control. My hands always hurt when I use the retractable. I usually have 2 at a time, and it is tough to use both retractable leads.

When we only had 2 dogs, we used to use the retractable ones all the time. In the winter, when we would be getting ready for walks, we would attach the leash, and then finish getting ready (boots, scarves, hats, gloves, etc). I used to laugh so hard at Abbey and Kito running around dragging the retractable leash behind them!!!