The only thing that was new to me on this shave is the blade, so I'll write a bit about that. I've avoided the Derby Extra because of the mixed but generally somewhat negative talk I've seen about it. But today I decided to try it. My conclusion? Not particularly sharp, left some more stubble on my face than others, but smooth on on the parts of my face which don't have the thickest hairs and a little tuggy on the thicker parts. So it wasn't the most pleasant or effective for me, but for someone with thinner hair who shaves daily I think it might be quite good. Perhaps that explains why some love it and some hate it (like marmite).