Depends on the instrument, volume, and overall type of move. SL can also be Stop Gain. It works best when the gain probability is less than the loss probability, independent of the actual trade PL.
Personally the single "hit a price" exit method is not preferred for me. Rather the SL point is just a data point, not an "submit" exit order point. I prefer to let the "SL point" be hit, and then start the process of exiting based on market action, and PL. When those are satisfied, I will market out of the trade.