A lot a DE and SE like to sing when they mow down stubble. 2011 R41, Barbasol floating head, MMOC and 1924 Gem all sing a happy song when used. I.M.H.O. nothing comes close to a Ever Ready 1914 Patent Pending. It was made for just over one year until the head was re-designed to become the Ever Ready 1914 marked 24/14. Do not know if it's the hold down fingers or the two piece spring but it sings like the fat lady at the end of a hard day.