A hanked on sail is better to maintain sail shape and has cleaner airflow over the sail and is basically faster than a sail that is on a furler. Various sails that can be interchanged depending on wind conditions are better than reefing your headsail on the furler. As you reef a 150 down to a true jib, the center of effort heightens and the boat heels over faster and that is not good for boat speed.
You can put all the hi-tech racing crap on your boat, but if you screw up a tack and put the boat into the "irons", there goes your advantage.
Ducati's past questions have been related to purchasing various boats and this was not meant as insulting, but rather after he has found a boat, sail it and find out its behaviours
Boat for boat, the guy with hanked on sails is faster than the guy with the furler.