Another Speedplay user here. In the past I have tried just about all the systems and the Speedplays are my favorite. Been using them now for about 18 years.
Easy to click in and out. Very smooth float. They do need a little maintenance but super easy. The cleats like to be cleaned occasionally and spritzed with your favorite
lube. I use a Teflon spray lube on mine. As far as worrying about being locked in an accident, I found this not to be a worry. In the spills I have had I didn't even think about it and disengaged from the pedals. After you ride with any pedal system for awhile it becomes second nature to disengage. I just happens............