Had both and I think I am quicker with the fifth. Hooking and unhooking the car we towed took a little more time than the doing the same with the fifth wheel. We had manual hydraulic levelers on the motor home so had to play with it a bit. The fifth wheel is automatic. Press a button, step back and watch it do its thing. All the other hook ups are the same.
One thing to think about, when we had the motorhome we would generally unhook the car in the check-in area and the wife would follow me to our spot. If you are by yourself that becomes a little more difficult. We did that so we wouldn't block the road in front of our campsite while we disconnected. Not an issue if you have a pull thru spot but those seem to be the exception, at least in our experience.